[performance] cache more database calls, reduce required database calls overall (#3290)

* improvements to caching for lists and relationship to accounts / follows

* fix nil panic in AddToList()

* ensure list related caches are correctly invalidated

* ensure returned ID lists are ordered correctly

* bump go-structr to v0.8.9 (returns early if zero uncached keys to be loaded)

* remove zero checks in uncached key load functions (go-structr now handles this)

* fix issues after rebase on upstream/main

* update the expected return order of CSV exports (since list entries are now down by entry creation date)

* rename some funcs, allow deleting list entries for multiple follow IDs at a time, fix up more tests

* use returning statements on delete to get cache invalidation info

* fixes to recent database delete changes

* fix broken list entries delete sql

* remove unused db function

* update remainder of delete functions to behave in similar way, some other small tweaks

* fix delete user sql, allow returning on err no entries

* uncomment + fix list database tests

* update remaining list tests

* update envparsing test

* add comments to each specific key being invalidated

* add more cache invalidation explanatory comments

* whoops; actually delete poll votes from database in the DeletePollByID() func

* remove added but-commented-out field

* improved comment regarding paging being disabled

* make cache invalidation comments match what's actually happening

* fix up delete query comments to match what is happening

* rename function to read a bit better

* don't use ErrNoEntries on delete when not needed (it's only needed for a RETURNING call)

* update function name in test

* move list exclusivity check to AFTER eligibility check. use log.Panic() instead of panic()

* use the poll_id column in poll_votes for selecting votes in poll ID

* fix function name

go.mod

@@ -23,7 +23,7 @@ require (
 	codeberg.org/gruf/go-runners v1.6.2
 	codeberg.org/gruf/go-sched v1.2.3
 	codeberg.org/gruf/go-storage v0.1.2
-	codeberg.org/gruf/go-structr v0.8.8
+	codeberg.org/gruf/go-structr v0.8.9
 	codeberg.org/superseriousbusiness/exif-terminator v0.9.0
 	github.com/DmitriyVTitov/size v1.5.0
 	github.com/KimMachineGun/automemlimit v0.6.1

go.sum

@@ -80,8 +80,8 @@ codeberg.org/gruf/go-sched v1.2.3 h1:H5ViDxxzOBR3uIyGBCf0eH8b1L8wMybOXcdtUUTXZHk
 codeberg.org/gruf/go-sched v1.2.3/go.mod h1:vT9uB6KWFIIwnG9vcPY2a0alYNoqdL1mSzRM8I+PK7A=
 codeberg.org/gruf/go-storage v0.1.2 h1:dIOVOKq1CJpRmuhbB8Zok3mmo8V6VV/nX5GLIm6hywA=
 codeberg.org/gruf/go-storage v0.1.2/go.mod h1:LRDpFHqRJi0f+35c3ltBH2e/pGfwY5dGlNlgCJ/R1DA=
-codeberg.org/gruf/go-structr v0.8.8 h1:lRPpyTmLKvQCkkQiSUbOAh6jtL2wncEO8DwksMqQXM8=
+codeberg.org/gruf/go-structr v0.8.9 h1:OyiSspWYCeJOm356fFPd+bDRumPrard2VAUXAPqZiJ0=
-codeberg.org/gruf/go-structr v0.8.8/go.mod h1:zkoXVrAnKosh8VFAsbP/Hhs8FmLBjbVVy5w/Ngm8ApM=
+codeberg.org/gruf/go-structr v0.8.9/go.mod h1:zkoXVrAnKosh8VFAsbP/Hhs8FmLBjbVVy5w/Ngm8ApM=
 codeberg.org/superseriousbusiness/exif-terminator v0.9.0 h1:/EfyGI6HIrbkhFwgXGSjZ9o1kr/+k8v4mKdfXTH02Go=
 codeberg.org/superseriousbusiness/exif-terminator v0.9.0/go.mod h1:gCWKduudUWFzsnixoMzu0FYVdxHWG+AbXnZ50DqxsUE=
 dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU=

internal/api/client/exports/exports_test.go

@@ -188,8 +188,8 @@ admin@localhost:8080
 			token:       suite.testTokens["local_account_1"],
 			user:        suite.testUsers["local_account_1"],
 			account:     suite.testAccounts["local_account_1"],
-			expect: `Cool Ass Posters From This Instance,admin@localhost:8080
+			expect: `Cool Ass Posters From This Instance,1happyturtle@localhost:8080
-Cool Ass Posters From This Instance,1happyturtle@localhost:8080
+Cool Ass Posters From This Instance,admin@localhost:8080
 `,
 		},
 		// Export Mutes.

internal/api/client/lists/listaccounts.go

@@ -25,6 +25,7 @@ import (
 	apiutil "github.com/superseriousbusiness/gotosocial/internal/api/util"
 	"github.com/superseriousbusiness/gotosocial/internal/gtserror"
 	"github.com/superseriousbusiness/gotosocial/internal/oauth"
+	"github.com/superseriousbusiness/gotosocial/internal/paging"
 )
 
 // ListAccountsGETHandler swagger:operation GET /api/v1/lists/{id}/accounts listAccounts
@@ -129,42 +130,27 @@ func (m *Module) ListAccountsGETHandler(c *gin.Context) {
 
 	targetListID := c.Param(IDKey)
 	if targetListID == "" {
-		err := errors.New("no list id specified")
+		const text = "no list id specified"
-		apiutil.ErrorHandler(c, gtserror.NewErrorBadRequest(err, err.Error()), m.processor.InstanceGetV1)
+		errWithCode := gtserror.NewErrorBadRequest(errors.New(text), text)
+		apiutil.ErrorHandler(c, errWithCode, m.processor.InstanceGetV1)
 		return
 	}
 
-	limit, errWithCode := apiutil.ParseLimit(c.Query(apiutil.LimitKey), 40, 80, 0)
+	page, errWithCode := paging.ParseIDPage(c,
+		1,  // min limit
+		80, // max limit
+		0,  // default = paging disabled
+	)
 	if errWithCode != nil {
 		apiutil.ErrorHandler(c, errWithCode, m.processor.InstanceGetV1)
 		return
 	}
 
-	var (
-		ctx = c.Request.Context()
-	)
-
-	if limit == 0 {
-		// Return all accounts in the list without pagination.
-		accounts, errWithCode := m.processor.List().GetAllListAccounts(ctx, authed.Account, targetListID)
-		if errWithCode != nil {
-			apiutil.ErrorHandler(c, errWithCode, m.processor.InstanceGetV1)
-			return
-		}
-
-		c.JSON(http.StatusOK, accounts)
-		return
-	}
-
-	// Return subset of accounts in the list with pagination.
 	resp, errWithCode := m.processor.List().GetListAccounts(
-		ctx,
+		c.Request.Context(),
 		authed.Account,
 		targetListID,
-		c.Query(MaxIDKey),
+		page,
-		c.Query(SinceIDKey),
-		c.Query(MinIDKey),
-		limit,
 	)
 	if errWithCode != nil {
 		apiutil.ErrorHandler(c, errWithCode, m.processor.InstanceGetV1)

internal/api/client/lists/listaccounts_test.go

@@ -19,7 +19,7 @@ package lists_test
 
 import (
 	"encoding/json"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"net/http/httptest"
 	"strconv"
@@ -97,7 +97,7 @@ func (suite *ListAccountsTestSuite) getListAccounts(
 	result := recorder.Result()
 	defer result.Body.Close()
 
-	b, err := ioutil.ReadAll(result.Body)
+	b, err := io.ReadAll(result.Body)
 	if err != nil {
 		return nil, "", err
 	}
@@ -151,8 +151,7 @@ func (suite *ListAccountsTestSuite) TestGetListAccountsPaginatedDefaultLimit() {
 
 	suite.Len(accounts, 2)
 	suite.Equal(
-		`<http://localhost:8080/api/v1/lists/01H0G8E4Q2J3FE3JDWJVWEDCD1/accounts?limit=40&max_id=01H0G89MWVQE0M58VD2HQYMQWH>; rel="next", `+
+		"<http://localhost:8080/api/v1/lists/01H0G8E4Q2J3FE3JDWJVWEDCD1/accounts?limit=40&max_id=01F8MH5NBDF2MV7CTC4Q5128HF>; rel=\"next\", <http://localhost:8080/api/v1/lists/01H0G8E4Q2J3FE3JDWJVWEDCD1/accounts?limit=40&min_id=01F8MH17FWEB39HZJ76B6VXSKF>; rel=\"prev\"",
-			`<http://localhost:8080/api/v1/lists/01H0G8E4Q2J3FE3JDWJVWEDCD1/accounts?limit=40&min_id=01H0G8FFM1AGQDRNGBGGX8CYJQ>; rel="prev"`,
 		link,
 	)
 }
@@ -184,8 +183,7 @@ func (suite *ListAccountsTestSuite) TestGetListAccountsPaginatedNextPage() {
 
 	suite.Len(accounts, 1)
 	suite.Equal(
-		`<http://localhost:8080/api/v1/lists/01H0G8E4Q2J3FE3JDWJVWEDCD1/accounts?limit=1&max_id=01H0G8FFM1AGQDRNGBGGX8CYJQ>; rel="next", `+
+		"<http://localhost:8080/api/v1/lists/01H0G8E4Q2J3FE3JDWJVWEDCD1/accounts?limit=1&max_id=01F8MH17FWEB39HZJ76B6VXSKF>; rel=\"next\", <http://localhost:8080/api/v1/lists/01H0G8E4Q2J3FE3JDWJVWEDCD1/accounts?limit=1&min_id=01F8MH17FWEB39HZJ76B6VXSKF>; rel=\"prev\"",
-			`<http://localhost:8080/api/v1/lists/01H0G8E4Q2J3FE3JDWJVWEDCD1/accounts?limit=1&min_id=01H0G8FFM1AGQDRNGBGGX8CYJQ>; rel="prev"`,
 		link,
 	)
 
@@ -206,8 +204,7 @@ func (suite *ListAccountsTestSuite) TestGetListAccountsPaginatedNextPage() {
 
 	suite.Len(accounts, 1)
 	suite.Equal(
-		`<http://localhost:8080/api/v1/lists/01H0G8E4Q2J3FE3JDWJVWEDCD1/accounts?limit=1&max_id=01H0G89MWVQE0M58VD2HQYMQWH>; rel="next", `+
+		"<http://localhost:8080/api/v1/lists/01H0G8E4Q2J3FE3JDWJVWEDCD1/accounts?limit=1&max_id=01F8MH17FWEB39HZJ76B6VXSKF>; rel=\"next\", <http://localhost:8080/api/v1/lists/01H0G8E4Q2J3FE3JDWJVWEDCD1/accounts?limit=1&min_id=01F8MH17FWEB39HZJ76B6VXSKF>; rel=\"prev\"",
-			`<http://localhost:8080/api/v1/lists/01H0G8E4Q2J3FE3JDWJVWEDCD1/accounts?limit=1&min_id=01H0G89MWVQE0M58VD2HQYMQWH>; rel="prev"`,
 		link,
 	)
 }

internal/api/client/lists/listaccountsadd_test.go

@@ -98,14 +98,17 @@ func (suite *ListAccountsAddTestSuite) TestPostListAccountNotFollowed() {
 
 	resp, err := suite.postListAccounts(http.StatusNotFound, listID, accountIDs)
 	suite.NoError(err)
-	suite.Equal(`{"error":"Not Found: you do not follow account 01F8MH5ZK5VRH73AKHQM6Y9VNX"}`, string(resp))
+	suite.Equal(`{"error":"Not Found: account 01F8MH5ZK5VRH73AKHQM6Y9VNX not currently followed"}`, string(resp))
 }
 
 func (suite *ListAccountsAddTestSuite) TestPostListAccountOK() {
+	entry := suite.testListEntries["local_account_1_list_1_entry_1"]
+
 	// Remove turtle from the list.
 	if err := suite.db.DeleteListEntry(
 		context.Background(),
-		suite.testListEntries["local_account_1_list_1_entry_1"].ID,
+		entry.ListID,
+		entry.FollowID,
 	); err != nil {
 		suite.FailNow(err.Error())
 	}

internal/cache/cache.go

@@ -62,7 +62,6 @@ func (c *Caches) Init() {
 	log.Infof(nil, "init: %p", c)
 
 	c.initAccount()
-	c.initAccountIDsFollowingTag()
 	c.initAccountNote()
 	c.initAccountSettings()
 	c.initAccountStats()
@@ -84,11 +83,13 @@ func (c *Caches) Init() {
 	c.initFollowIDs()
 	c.initFollowRequest()
 	c.initFollowRequestIDs()
+	c.initFollowingTagIDs()
 	c.initInReplyToIDs()
 	c.initInstance()
 	c.initInteractionRequest()
 	c.initList()
-	c.initListEntry()
+	c.initListIDs()
+	c.initListedIDs()
 	c.initMarker()
 	c.initMedia()
 	c.initMention()
@@ -105,7 +106,6 @@ func (c *Caches) Init() {
 	c.initStatusFave()
 	c.initStatusFaveIDs()
 	c.initTag()
-	c.initTagIDsFollowedByAccount()
 	c.initThreadMute()
 	c.initToken()
 	c.initTombstone()
@@ -148,7 +148,6 @@ func (c *Caches) Stop() {
 // significant overhead to all cache writes.
 func (c *Caches) Sweep(threshold float64) {
 	c.DB.Account.Trim(threshold)
-	c.DB.AccountIDsFollowingTag.Trim(threshold)
 	c.DB.AccountNote.Trim(threshold)
 	c.DB.AccountSettings.Trim(threshold)
 	c.DB.AccountStats.Trim(threshold)
@@ -168,11 +167,13 @@ func (c *Caches) Sweep(threshold float64) {
 	c.DB.FollowIDs.Trim(threshold)
 	c.DB.FollowRequest.Trim(threshold)
 	c.DB.FollowRequestIDs.Trim(threshold)
+	c.DB.FollowingTagIDs.Trim(threshold)
 	c.DB.InReplyToIDs.Trim(threshold)
 	c.DB.Instance.Trim(threshold)
 	c.DB.InteractionRequest.Trim(threshold)
 	c.DB.List.Trim(threshold)
-	c.DB.ListEntry.Trim(threshold)
+	c.DB.ListIDs.Trim(threshold)
+	c.DB.ListedIDs.Trim(threshold)
 	c.DB.Marker.Trim(threshold)
 	c.DB.Media.Trim(threshold)
 	c.DB.Mention.Trim(threshold)
@@ -189,7 +190,6 @@ func (c *Caches) Sweep(threshold float64) {
 	c.DB.StatusFave.Trim(threshold)
 	c.DB.StatusFaveIDs.Trim(threshold)
 	c.DB.Tag.Trim(threshold)
-	c.DB.TagIDsFollowedByAccount.Trim(threshold)
 	c.DB.ThreadMute.Trim(threshold)
 	c.DB.Token.Trim(threshold)
 	c.DB.Tombstone.Trim(threshold)

internal/cache/db.go

@@ -29,9 +29,6 @@ type DBCaches struct {
 	// Account provides access to the gtsmodel Account database cache.
 	Account StructCache[*gtsmodel.Account]
 
-	// AccountIDsFollowingTag caches account IDs following a given tag ID.
-	AccountIDsFollowingTag SliceCache[string]
-
 	// AccountNote provides access to the gtsmodel Note database cache.
 	AccountNote StructCache[*gtsmodel.AccountNote]
 
@@ -88,10 +85,23 @@ type DBCaches struct {
 
 	// FollowIDs provides access to the follower / following IDs database cache.
 	// THIS CACHE IS KEYED AS THE FOLLOWING {prefix}{accountID} WHERE PREFIX IS:
-	// - '>'  for following IDs
+	//
-	// - 'l>' for local following IDs
+	// - '>{$accountID}'  for following IDs
-	// - '<'  for follower IDs
+	//   e.g. FollowIDs.Load(">" + account.ID, func() {})
-	// - 'l<' for local follower IDs
+	//   which will load a slice of follows IDs FROM account.
+	//
+	// - 'l>{$accountID}' for local following IDs
+	//   e.g. FollowIDs.Load("l>" + account.ID, func() {})
+	//   which will load a slice of LOCAL follows IDs FROM account.
+	//
+	// - '<{$accountID}' for follower IDs
+	//   e.g. FollowIDs.Load("<" + account.ID, func() {})
+	//   which will load a slice of follows IDs TARGETTING account.
+	//
+	// - 'l<{$accountID}' for local follower IDs
+	//   e.g. FollowIDs.Load("l<" + account.ID, func() {})
+	//   which will load a slice of LOCAL follows IDs TARGETTING account.
+	//
 	FollowIDs SliceCache[string]
 
 	// FollowRequest provides access to the gtsmodel FollowRequest database cache.
@@ -99,10 +109,30 @@ type DBCaches struct {
 
 	// FollowRequestIDs provides access to the follow requester / requesting IDs database
 	// cache. THIS CACHE IS KEYED AS THE FOLLOWING {prefix}{accountID} WHERE PREFIX IS:
-	// - '>'  for following IDs
+	//
-	// - '<'  for follower IDs
+	// - '>{$accountID}'  for follow request IDs
+	//   e.g. FollowRequestIDs.Load(">" + account.ID, func() {})
+	//   which will load a slice of follow request IDs TARGETTING account.
+	//
+	// - '<{$accountID}'  for follow request IDs
+	//   e.g. FollowRequestIDs.Load("<" + account.ID, func() {})
+	//   which will load a slice of follow request IDs FROM account.
+	//
 	FollowRequestIDs SliceCache[string]
 
+	// FollowingTagIDs provides access to account IDs following / tag IDs followed by
+	// account db cache. THIS CACHE IS KEYED AS THE FOLLOWING {prefix}{id} WHERE:
+	//
+	// - '>{$accountID}' for tag IDs followed by account
+	//   e.g. FollowingTagIDs.Load(">" + account.ID, func() {})
+	//   which will load a slice of tag IDs followed by account.
+	//
+	// - '<{$tagIDs}' for account IDs following tag
+	//   e.g. FollowingTagIDs.Load("<" + tag.ID, func() {})
+	//   which will load a slice of account IDs following tag.
+	//
+	FollowingTagIDs SliceCache[string]
+
 	// Instance provides access to the gtsmodel Instance database cache.
 	Instance StructCache[*gtsmodel.Instance]
 
@@ -115,8 +145,31 @@ type DBCaches struct {
 	// List provides access to the gtsmodel List database cache.
 	List StructCache[*gtsmodel.List]
 
-	// ListEntry provides access to the gtsmodel ListEntry database cache.
+	// ListIDs provides access to the list IDs owned by account / list IDs follow
-	ListEntry StructCache[*gtsmodel.ListEntry]
+	// contained in db cache. THIS CACHE IS KEYED AS FOLLOWING {prefix}{id} WHERE:
+	//
+	// - 'a{$accountID}' for list IDs owned by account
+	//   e.g. ListIDs.Load("a" + account.ID, func() {})
+	//   which will load a slice of list IDs owned by account.
+	//
+	// - 'f{$followID}' for list IDs follow contained in
+	//   e.g. ListIDs.Load("f" + follow.ID, func() {})
+	//   which will load a slice of list IDs containing follow.
+	//
+	ListIDs SliceCache[string]
+
+	// ListedIDs provides access to the account IDs in list / follow IDs in
+	// list db cache. THIS CACHE IS KEYED AS FOLLOWING {prefix}{id} WHERE:
+	//
+	// - 'a{listID}' for account IDs in list ID
+	//   e.g. ListedIDs.Load("a" + list.ID, func() {})
+	//   which will load a slice of account IDs in list.
+	//
+	// - 'f{listID}' for follow IDs in list ID
+	//   e.g. ListedIDs.Load("f" + list.ID, func() {})
+	//   which will load a slice of follow IDs in list.
+	//
+	ListedIDs SliceCache[string]
 
 	// Marker provides access to the gtsmodel Marker database cache.
 	Marker StructCache[*gtsmodel.Marker]
@@ -151,10 +204,10 @@ type DBCaches struct {
 	// Status provides access to the gtsmodel Status database cache.
 	Status StructCache[*gtsmodel.Status]
 
-	// StatusBookmark ...
+	// StatusBookmark provides access to the gtsmodel StatusBookmark database cache.
 	StatusBookmark StructCache[*gtsmodel.StatusBookmark]
 
-	// StatusBookmarkIDs ...
+	// StatusBookmarkIDs provides access to the status bookmark IDs list database cache.
 	StatusBookmarkIDs SliceCache[string]
 
 	// StatusFave provides access to the gtsmodel StatusFave database cache.
@@ -166,9 +219,6 @@ type DBCaches struct {
 	// Tag provides access to the gtsmodel Tag database cache.
 	Tag StructCache[*gtsmodel.Tag]
 
-	// TagIDsFollowedByAccount caches tag IDs followed by a given account ID.
-	TagIDsFollowedByAccount SliceCache[string]
-
 	// ThreadMute provides access to the gtsmodel ThreadMute database cache.
 	ThreadMute StructCache[*gtsmodel.ThreadMute]
 
@@ -243,17 +293,6 @@ func (c *Caches) initAccount() {
 	})
 }
 
-func (c *Caches) initAccountIDsFollowingTag() {
-	// Calculate maximum cache size.
-	cap := calculateSliceCacheMax(
-		config.GetCacheAccountIDsFollowingTagMemRatio(),
-	)
-
-	log.Infof(nil, "cache size = %d", cap)
-
-	c.DB.AccountIDsFollowingTag.Init(0, cap)
-}
-
 func (c *Caches) initAccountNote() {
 	// Calculate maximum cache size.
 	cap := calculateResultCacheMax(
@@ -761,6 +800,17 @@ func (c *Caches) initFollowRequestIDs() {
 	c.DB.FollowRequestIDs.Init(0, cap)
 }
 
+func (c *Caches) initFollowingTagIDs() {
+	// Calculate maximum cache size.
+	cap := calculateSliceCacheMax(
+		config.GetCacheFollowingTagIDsMemRatio(),
+	)
+
+	log.Infof(nil, "cache size = %d", cap)
+
+	c.DB.FollowingTagIDs.Init(0, cap)
+}
+
 func (c *Caches) initInReplyToIDs() {
 	// Calculate maximum cache size.
 	cap := calculateSliceCacheMax(
@@ -860,7 +910,6 @@ func (c *Caches) initList() {
 		// will be populated separately.
 		// See internal/db/bundb/list.go.
 		l2.Account = nil
-		l2.ListEntries = nil
 
 		return l2
 	}
@@ -876,37 +925,26 @@ func (c *Caches) initList() {
 	})
 }
 
-func (c *Caches) initListEntry() {
+func (c *Caches) initListIDs() {
 	// Calculate maximum cache size.
-	cap := calculateResultCacheMax(
+	cap := calculateSliceCacheMax(
-		sizeofListEntry(), // model in-mem size.
+		config.GetCacheListIDsMemRatio(),
-		config.GetCacheListEntryMemRatio(),
 	)
 
 	log.Infof(nil, "cache size = %d", cap)
 
-	copyF := func(l1 *gtsmodel.ListEntry) *gtsmodel.ListEntry {
+	c.DB.ListIDs.Init(0, cap)
-		l2 := new(gtsmodel.ListEntry)
+}
-		*l2 = *l1
 
-		// Don't include ptr fields that
+func (c *Caches) initListedIDs() {
-		// will be populated separately.
+	// Calculate maximum cache size.
-		// See internal/db/bundb/list.go.
+	cap := calculateSliceCacheMax(
-		l2.Follow = nil
+		config.GetCacheListedIDsMemRatio(),
+	)
 
-		return l2
+	log.Infof(nil, "cache size = %d", cap)
-	}
 
-	c.DB.ListEntry.Init(structr.CacheConfig[*gtsmodel.ListEntry]{
+	c.DB.ListedIDs.Init(0, cap)
-		Indices: []structr.IndexConfig{
-			{Fields: "ID"},
-			{Fields: "ListID", Multiple: true},
-			{Fields: "FollowID", Multiple: true},
-		},
-		MaxSize:   cap,
-		IgnoreErr: ignoreErrors,
-		Copy:      copyF,
-	})
 }
 
 func (c *Caches) initMarker() {
@@ -1368,17 +1406,6 @@ func (c *Caches) initTag() {
 	})
 }
 
-func (c *Caches) initTagIDsFollowedByAccount() {
-	// Calculate maximum cache size.
-	cap := calculateSliceCacheMax(
-		config.GetCacheTagIDsFollowedByAccountMemRatio(),
-	)
-
-	log.Infof(nil, "cache size = %d", cap)
-
-	c.DB.TagIDsFollowedByAccount.Init(0, cap)
-}
-
 func (c *Caches) initThreadMute() {
 	cap := calculateResultCacheMax(
 		sizeofThreadMute(), // model in-mem size.

internal/cache/invalidate.go

@@ -97,9 +97,6 @@ func (c *Caches) OnInvalidateFollow(follow *gtsmodel.Follow) {
 	// Invalidate follow request with this same ID.
 	c.DB.FollowRequest.Invalidate("ID", follow.ID)
 
-	// Invalidate any related list entries.
-	c.DB.ListEntry.Invalidate("FollowID", follow.ID)
-
 	// Invalidate follow origin account ID cached visibility.
 	c.Visibility.Invalidate("ItemID", follow.AccountID)
 	c.Visibility.Invalidate("RequesterID", follow.AccountID)
@@ -108,18 +105,47 @@ func (c *Caches) OnInvalidateFollow(follow *gtsmodel.Follow) {
 	c.Visibility.Invalidate("ItemID", follow.TargetAccountID)
 	c.Visibility.Invalidate("RequesterID", follow.TargetAccountID)
 
-	// Invalidate source account's following
+	// Invalidate ID slice cache.
-	// lists, and destination's follwer lists.
-	// (see FollowIDs() comment for details).
 	c.DB.FollowIDs.Invalidate(
+
+		// Invalidate follow ID lists
+		// TARGETTING origin account
+		// (including local-only follows).
 		">"+follow.AccountID,
 		"l>"+follow.AccountID,
+
+		// Invalidate follow ID lists
+		// FROM the origin account
+		// (including local-only follows).
 		"<"+follow.AccountID,
 		"l<"+follow.AccountID,
-		"<"+follow.TargetAccountID,
+
-		"l<"+follow.TargetAccountID,
+		// Invalidate follow ID lists
+		// TARGETTING the target account
+		// (including local-only follows).
 		">"+follow.TargetAccountID,
 		"l>"+follow.TargetAccountID,
+
+		// Invalidate follow ID lists
+		// FROM the target account
+		// (including local-only follows).
+		"<"+follow.TargetAccountID,
+		"l<"+follow.TargetAccountID,
+	)
+
+	// Invalidate ID slice cache.
+	c.DB.ListIDs.Invalidate(
+
+		// Invalidate source
+		// account's owned lists.
+		"a"+follow.AccountID,
+
+		// Invalidate target account's.
+		"a"+follow.TargetAccountID,
+
+		// Invalidate lists containing
+		// list entries for follow.
+		"f"+follow.ID,
 	)
 }
 
@@ -127,20 +153,48 @@ func (c *Caches) OnInvalidateFollowRequest(followReq *gtsmodel.FollowRequest) {
 	// Invalidate follow with this same ID.
 	c.DB.Follow.Invalidate("ID", followReq.ID)
 
-	// Invalidate source account's followreq
+	// Invalidate ID slice cache.
-	// lists, and destinations follow req lists.
-	// (see FollowRequestIDs() comment for details).
 	c.DB.FollowRequestIDs.Invalidate(
+
+		// Invalidate follow request ID
+		// lists TARGETTING origin account
+		// (including local-only follows).
 		">"+followReq.AccountID,
+
+		// Invalidate follow request ID
+		// lists FROM the origin account
+		// (including local-only follows).
 		"<"+followReq.AccountID,
+
+		// Invalidate follow request ID
+		// lists TARGETTING target account
+		// (including local-only follows).
 		">"+followReq.TargetAccountID,
+
+		// Invalidate follow request ID
+		// lists FROM the target account
+		// (including local-only follows).
 		"<"+followReq.TargetAccountID,
 	)
 }
 
 func (c *Caches) OnInvalidateList(list *gtsmodel.List) {
-	// Invalidate all cached entries of this list.
+	// Invalidate list IDs cache.
-	c.DB.ListEntry.Invalidate("ListID", list.ID)
+	c.DB.ListIDs.Invalidate(
+		"a" + list.AccountID,
+	)
+
+	// Invalidate ID slice cache.
+	c.DB.ListedIDs.Invalidate(
+
+		// Invalidate list of
+		// account IDs in list.
+		"a"+list.ID,
+
+		// Invalidate list of
+		// follow IDs in list.
+		"f"+list.ID,
+	)
 }
 
 func (c *Caches) OnInvalidateMedia(media *gtsmodel.MediaAttachment) {
@@ -184,7 +238,7 @@ func (c *Caches) OnInvalidateStatus(status *gtsmodel.Status) {
 	// the media IDs in use before the media table is
 	// aware of the status ID they are linked to.
 	//
-	// c.DB.Media().Invalidate("StatusID") will not work.
+	// c.DB.Media.Invalidate("StatusID") will not work.
 	c.DB.Media.InvalidateIDs("ID", status.AttachmentIDs)
 
 	if status.BoostOfID != "" {

internal/cache/size.go

@@ -166,6 +166,7 @@ func calculateCacheMax(keySz, valSz uintptr, ratio float64) int {
 
 // totalOfRatios returns the total of all cache ratios added together.
 func totalOfRatios() float64 {
+
 	// NOTE: this is not performant calculating
 	// this every damn time (mainly the mutex unlocks
 	// required to access each config var). fortunately
@@ -189,11 +190,13 @@ func totalOfRatios() float64 {
 		config.GetCacheFollowIDsMemRatio() +
 		config.GetCacheFollowRequestMemRatio() +
 		config.GetCacheFollowRequestIDsMemRatio() +
+		config.GetCacheFollowingTagIDsMemRatio() +
+		config.GetCacheInReplyToIDsMemRatio() +
 		config.GetCacheInstanceMemRatio() +
 		config.GetCacheInteractionRequestMemRatio() +
-		config.GetCacheInReplyToIDsMemRatio() +
 		config.GetCacheListMemRatio() +
-		config.GetCacheListEntryMemRatio() +
+		config.GetCacheListIDsMemRatio() +
+		config.GetCacheListedIDsMemRatio() +
 		config.GetCacheMarkerMemRatio() +
 		config.GetCacheMediaMemRatio() +
 		config.GetCacheMentionMemRatio() +
@@ -201,7 +204,9 @@ func totalOfRatios() float64 {
 		config.GetCacheNotificationMemRatio() +
 		config.GetCachePollMemRatio() +
 		config.GetCachePollVoteMemRatio() +
+		config.GetCachePollVoteIDsMemRatio() +
 		config.GetCacheReportMemRatio() +
+		config.GetCacheSinBinStatusMemRatio() +
 		config.GetCacheStatusMemRatio() +
 		config.GetCacheStatusBookmarkMemRatio() +
 		config.GetCacheStatusBookmarkIDsMemRatio() +
@@ -212,6 +217,8 @@ func totalOfRatios() float64 {
 		config.GetCacheTokenMemRatio() +
 		config.GetCacheTombstoneMemRatio() +
 		config.GetCacheUserMemRatio() +
+		config.GetCacheUserMuteMemRatio() +
+		config.GetCacheUserMuteIDsMemRatio() +
 		config.GetCacheWebfingerMemRatio() +
 		config.GetCacheVisibilityMemRatio()
 }
@@ -466,16 +473,6 @@ func sizeofList() uintptr {
 	}))
 }
 
-func sizeofListEntry() uintptr {
-	return uintptr(size.Of(&gtsmodel.ListEntry{
-		ID:        exampleID,
-		CreatedAt: exampleTime,
-		UpdatedAt: exampleTime,
-		ListID:    exampleID,
-		FollowID:  exampleID,
-	}))
-}
-
 func sizeofMarker() uintptr {
 	return uintptr(size.Of(&gtsmodel.Marker{
 		AccountID:  exampleID,

internal/config/config.go

@@ -196,7 +196,6 @@ type HTTPClientConfiguration struct {
 type CacheConfiguration struct {
 	MemoryTarget                      bytesize.Size `name:"memory-target"`
 	AccountMemRatio                   float64       `name:"account-mem-ratio"`
-	AccountIDsFollowingTagMemRatio    float64       `name:"account-ids-following-tag-mem-ratio"`
 	AccountNoteMemRatio               float64       `name:"account-note-mem-ratio"`
 	AccountSettingsMemRatio           float64       `name:"account-settings-mem-ratio"`
 	AccountStatsMemRatio              float64       `name:"account-stats-mem-ratio"`
@@ -216,11 +215,13 @@ type CacheConfiguration struct {
 	FollowIDsMemRatio                 float64       `name:"follow-ids-mem-ratio"`
 	FollowRequestMemRatio             float64       `name:"follow-request-mem-ratio"`
 	FollowRequestIDsMemRatio          float64       `name:"follow-request-ids-mem-ratio"`
+	FollowingTagIDsMemRatio           float64       `name:"following-tag-ids-mem-ratio"`
 	InReplyToIDsMemRatio              float64       `name:"in-reply-to-ids-mem-ratio"`
 	InstanceMemRatio                  float64       `name:"instance-mem-ratio"`
 	InteractionRequestMemRatio        float64       `name:"interaction-request-mem-ratio"`
 	ListMemRatio                      float64       `name:"list-mem-ratio"`
-	ListEntryMemRatio                 float64       `name:"list-entry-mem-ratio"`
+	ListIDsMemRatio                   float64       `name:"list-ids-mem-ratio"`
+	ListedIDsMemRatio                 float64       `name:"listed-ids-mem-ratio"`
 	MarkerMemRatio                    float64       `name:"marker-mem-ratio"`
 	MediaMemRatio                     float64       `name:"media-mem-ratio"`
 	MentionMemRatio                   float64       `name:"mention-mem-ratio"`
@@ -237,7 +238,6 @@ type CacheConfiguration struct {
 	StatusFaveMemRatio                float64       `name:"status-fave-mem-ratio"`
 	StatusFaveIDsMemRatio             float64       `name:"status-fave-ids-mem-ratio"`
 	TagMemRatio                       float64       `name:"tag-mem-ratio"`
-	TagIDsFollowedByAccountMemRatio   float64       `name:"tag-ids-followed-by-account-mem-ratio"`
 	ThreadMuteMemRatio                float64       `name:"thread-mute-mem-ratio"`
 	TokenMemRatio                     float64       `name:"token-mem-ratio"`
 	TombstoneMemRatio                 float64       `name:"tombstone-mem-ratio"`

internal/config/defaults.go

@@ -159,7 +159,6 @@ var Defaults = Configuration{
 		// file have been addressed, these should
 		// be able to make some more sense :D
 		AccountMemRatio:                   5,
-		AccountIDsFollowingTagMemRatio:    1,
 		AccountNoteMemRatio:               1,
 		AccountSettingsMemRatio:           0.1,
 		AccountStatsMemRatio:              2,
@@ -179,11 +178,13 @@ var Defaults = Configuration{
 		FollowIDsMemRatio:                 4,
 		FollowRequestMemRatio:             2,
 		FollowRequestIDsMemRatio:          2,
+		FollowingTagIDsMemRatio:           2,
 		InReplyToIDsMemRatio:              3,
 		InstanceMemRatio:                  1,
 		InteractionRequestMemRatio:        1,
 		ListMemRatio:                      1,
-		ListEntryMemRatio:                 2,
+		ListIDsMemRatio:                   2,
+		ListedIDsMemRatio:                 2,
 		MarkerMemRatio:                    0.5,
 		MediaMemRatio:                     4,
 		MentionMemRatio:                   2,
@@ -200,7 +201,6 @@ var Defaults = Configuration{
 		StatusFaveMemRatio:                2,
 		StatusFaveIDsMemRatio:             3,
 		TagMemRatio:                       2,
-		TagIDsFollowedByAccountMemRatio:   1,
 		ThreadMuteMemRatio:                0.2,
 		TokenMemRatio:                     0.75,
 		TombstoneMemRatio:                 0.5,

internal/config/helpers.gen.go

@@ -2850,37 +2850,6 @@ func GetCacheAccountMemRatio() float64 { return global.GetCacheAccountMemRatio()
 // SetCacheAccountMemRatio safely sets the value for global configuration 'Cache.AccountMemRatio' field
 func SetCacheAccountMemRatio(v float64) { global.SetCacheAccountMemRatio(v) }
 
-// GetCacheAccountIDsFollowingTagMemRatio safely fetches the Configuration value for state's 'Cache.AccountIDsFollowingTagMemRatio' field
-func (st *ConfigState) GetCacheAccountIDsFollowingTagMemRatio() (v float64) {
-	st.mutex.RLock()
-	v = st.config.Cache.AccountIDsFollowingTagMemRatio
-	st.mutex.RUnlock()
-	return
-}
-
-// SetCacheAccountIDsFollowingTagMemRatio safely sets the Configuration value for state's 'Cache.AccountIDsFollowingTagMemRatio' field
-func (st *ConfigState) SetCacheAccountIDsFollowingTagMemRatio(v float64) {
-	st.mutex.Lock()
-	defer st.mutex.Unlock()
-	st.config.Cache.AccountIDsFollowingTagMemRatio = v
-	st.reloadToViper()
-}
-
-// CacheAccountIDsFollowingTagMemRatioFlag returns the flag name for the 'Cache.AccountIDsFollowingTagMemRatio' field
-func CacheAccountIDsFollowingTagMemRatioFlag() string {
-	return "cache-account-ids-following-tag-mem-ratio"
-}
-
-// GetCacheAccountIDsFollowingTagMemRatio safely fetches the value for global configuration 'Cache.AccountIDsFollowingTagMemRatio' field
-func GetCacheAccountIDsFollowingTagMemRatio() float64 {
-	return global.GetCacheAccountIDsFollowingTagMemRatio()
-}
-
-// SetCacheAccountIDsFollowingTagMemRatio safely sets the value for global configuration 'Cache.AccountIDsFollowingTagMemRatio' field
-func SetCacheAccountIDsFollowingTagMemRatio(v float64) {
-	global.SetCacheAccountIDsFollowingTagMemRatio(v)
-}
-
 // GetCacheAccountNoteMemRatio safely fetches the Configuration value for state's 'Cache.AccountNoteMemRatio' field
 func (st *ConfigState) GetCacheAccountNoteMemRatio() (v float64) {
 	st.mutex.RLock()
@@ -3362,6 +3331,31 @@ func GetCacheFollowRequestIDsMemRatio() float64 { return global.GetCacheFollowRe
 // SetCacheFollowRequestIDsMemRatio safely sets the value for global configuration 'Cache.FollowRequestIDsMemRatio' field
 func SetCacheFollowRequestIDsMemRatio(v float64) { global.SetCacheFollowRequestIDsMemRatio(v) }
 
+// GetCacheFollowingTagIDsMemRatio safely fetches the Configuration value for state's 'Cache.FollowingTagIDsMemRatio' field
+func (st *ConfigState) GetCacheFollowingTagIDsMemRatio() (v float64) {
+	st.mutex.RLock()
+	v = st.config.Cache.FollowingTagIDsMemRatio
+	st.mutex.RUnlock()
+	return
+}
+
+// SetCacheFollowingTagIDsMemRatio safely sets the Configuration value for state's 'Cache.FollowingTagIDsMemRatio' field
+func (st *ConfigState) SetCacheFollowingTagIDsMemRatio(v float64) {
+	st.mutex.Lock()
+	defer st.mutex.Unlock()
+	st.config.Cache.FollowingTagIDsMemRatio = v
+	st.reloadToViper()
+}
+
+// CacheFollowingTagIDsMemRatioFlag returns the flag name for the 'Cache.FollowingTagIDsMemRatio' field
+func CacheFollowingTagIDsMemRatioFlag() string { return "cache-following-tag-ids-mem-ratio" }
+
+// GetCacheFollowingTagIDsMemRatio safely fetches the value for global configuration 'Cache.FollowingTagIDsMemRatio' field
+func GetCacheFollowingTagIDsMemRatio() float64 { return global.GetCacheFollowingTagIDsMemRatio() }
+
+// SetCacheFollowingTagIDsMemRatio safely sets the value for global configuration 'Cache.FollowingTagIDsMemRatio' field
+func SetCacheFollowingTagIDsMemRatio(v float64) { global.SetCacheFollowingTagIDsMemRatio(v) }
+
 // GetCacheInReplyToIDsMemRatio safely fetches the Configuration value for state's 'Cache.InReplyToIDsMemRatio' field
 func (st *ConfigState) GetCacheInReplyToIDsMemRatio() (v float64) {
 	st.mutex.RLock()
@@ -3462,30 +3456,55 @@ func GetCacheListMemRatio() float64 { return global.GetCacheListMemRatio() }
 // SetCacheListMemRatio safely sets the value for global configuration 'Cache.ListMemRatio' field
 func SetCacheListMemRatio(v float64) { global.SetCacheListMemRatio(v) }
 
-// GetCacheListEntryMemRatio safely fetches the Configuration value for state's 'Cache.ListEntryMemRatio' field
+// GetCacheListIDsMemRatio safely fetches the Configuration value for state's 'Cache.ListIDsMemRatio' field
-func (st *ConfigState) GetCacheListEntryMemRatio() (v float64) {
+func (st *ConfigState) GetCacheListIDsMemRatio() (v float64) {
 	st.mutex.RLock()
-	v = st.config.Cache.ListEntryMemRatio
+	v = st.config.Cache.ListIDsMemRatio
 	st.mutex.RUnlock()
 	return
 }
 
-// SetCacheListEntryMemRatio safely sets the Configuration value for state's 'Cache.ListEntryMemRatio' field
+// SetCacheListIDsMemRatio safely sets the Configuration value for state's 'Cache.ListIDsMemRatio' field
-func (st *ConfigState) SetCacheListEntryMemRatio(v float64) {
+func (st *ConfigState) SetCacheListIDsMemRatio(v float64) {
 	st.mutex.Lock()
 	defer st.mutex.Unlock()
-	st.config.Cache.ListEntryMemRatio = v
+	st.config.Cache.ListIDsMemRatio = v
 	st.reloadToViper()
 }
 
-// CacheListEntryMemRatioFlag returns the flag name for the 'Cache.ListEntryMemRatio' field
+// CacheListIDsMemRatioFlag returns the flag name for the 'Cache.ListIDsMemRatio' field
-func CacheListEntryMemRatioFlag() string { return "cache-list-entry-mem-ratio" }
+func CacheListIDsMemRatioFlag() string { return "cache-list-ids-mem-ratio" }
 
-// GetCacheListEntryMemRatio safely fetches the value for global configuration 'Cache.ListEntryMemRatio' field
+// GetCacheListIDsMemRatio safely fetches the value for global configuration 'Cache.ListIDsMemRatio' field
-func GetCacheListEntryMemRatio() float64 { return global.GetCacheListEntryMemRatio() }
+func GetCacheListIDsMemRatio() float64 { return global.GetCacheListIDsMemRatio() }
 
-// SetCacheListEntryMemRatio safely sets the value for global configuration 'Cache.ListEntryMemRatio' field
+// SetCacheListIDsMemRatio safely sets the value for global configuration 'Cache.ListIDsMemRatio' field
-func SetCacheListEntryMemRatio(v float64) { global.SetCacheListEntryMemRatio(v) }
+func SetCacheListIDsMemRatio(v float64) { global.SetCacheListIDsMemRatio(v) }
+
+// GetCacheListedIDsMemRatio safely fetches the Configuration value for state's 'Cache.ListedIDsMemRatio' field
+func (st *ConfigState) GetCacheListedIDsMemRatio() (v float64) {
+	st.mutex.RLock()
+	v = st.config.Cache.ListedIDsMemRatio
+	st.mutex.RUnlock()
+	return
+}
+
+// SetCacheListedIDsMemRatio safely sets the Configuration value for state's 'Cache.ListedIDsMemRatio' field
+func (st *ConfigState) SetCacheListedIDsMemRatio(v float64) {
+	st.mutex.Lock()
+	defer st.mutex.Unlock()
+	st.config.Cache.ListedIDsMemRatio = v
+	st.reloadToViper()
+}
+
+// CacheListedIDsMemRatioFlag returns the flag name for the 'Cache.ListedIDsMemRatio' field
+func CacheListedIDsMemRatioFlag() string { return "cache-listed-ids-mem-ratio" }
+
+// GetCacheListedIDsMemRatio safely fetches the value for global configuration 'Cache.ListedIDsMemRatio' field
+func GetCacheListedIDsMemRatio() float64 { return global.GetCacheListedIDsMemRatio() }
+
+// SetCacheListedIDsMemRatio safely sets the value for global configuration 'Cache.ListedIDsMemRatio' field
+func SetCacheListedIDsMemRatio(v float64) { global.SetCacheListedIDsMemRatio(v) }
 
 // GetCacheMarkerMemRatio safely fetches the Configuration value for state's 'Cache.MarkerMemRatio' field
 func (st *ConfigState) GetCacheMarkerMemRatio() (v float64) {
@@ -3887,37 +3906,6 @@ func GetCacheTagMemRatio() float64 { return global.GetCacheTagMemRatio() }
 // SetCacheTagMemRatio safely sets the value for global configuration 'Cache.TagMemRatio' field
 func SetCacheTagMemRatio(v float64) { global.SetCacheTagMemRatio(v) }
 
-// GetCacheTagIDsFollowedByAccountMemRatio safely fetches the Configuration value for state's 'Cache.TagIDsFollowedByAccountMemRatio' field
-func (st *ConfigState) GetCacheTagIDsFollowedByAccountMemRatio() (v float64) {
-	st.mutex.RLock()
-	v = st.config.Cache.TagIDsFollowedByAccountMemRatio
-	st.mutex.RUnlock()
-	return
-}
-
-// SetCacheTagIDsFollowedByAccountMemRatio safely sets the Configuration value for state's 'Cache.TagIDsFollowedByAccountMemRatio' field
-func (st *ConfigState) SetCacheTagIDsFollowedByAccountMemRatio(v float64) {
-	st.mutex.Lock()
-	defer st.mutex.Unlock()
-	st.config.Cache.TagIDsFollowedByAccountMemRatio = v
-	st.reloadToViper()
-}
-
-// CacheTagIDsFollowedByAccountMemRatioFlag returns the flag name for the 'Cache.TagIDsFollowedByAccountMemRatio' field
-func CacheTagIDsFollowedByAccountMemRatioFlag() string {
-	return "cache-tag-ids-followed-by-account-mem-ratio"
-}
-
-// GetCacheTagIDsFollowedByAccountMemRatio safely fetches the value for global configuration 'Cache.TagIDsFollowedByAccountMemRatio' field
-func GetCacheTagIDsFollowedByAccountMemRatio() float64 {
-	return global.GetCacheTagIDsFollowedByAccountMemRatio()
-}
-
-// SetCacheTagIDsFollowedByAccountMemRatio safely sets the value for global configuration 'Cache.TagIDsFollowedByAccountMemRatio' field
-func SetCacheTagIDsFollowedByAccountMemRatio(v float64) {
-	global.SetCacheTagIDsFollowedByAccountMemRatio(v)
-}
-
 // GetCacheThreadMuteMemRatio safely fetches the Configuration value for state's 'Cache.ThreadMuteMemRatio' field
 func (st *ConfigState) GetCacheThreadMuteMemRatio() (v float64) {
 	st.mutex.RLock()

internal/db/account.go

@@ -123,9 +123,6 @@ type Account interface {
 	// In the case of no statuses, this function will return db.ErrNoEntries.
 	GetAccountWebStatuses(ctx context.Context, account *gtsmodel.Account, limit int, maxID string) ([]*gtsmodel.Status, error)
 
-	// SetAccountHeaderOrAvatar sets the header or avatar for the given accountID to the given media attachment.
-	SetAccountHeaderOrAvatar(ctx context.Context, mediaAttachment *gtsmodel.MediaAttachment, accountID string) error
-
 	// GetInstanceAccount returns the instance account for the given domain.
 	// If domain is empty, this instance account will be returned.
 	GetInstanceAccount(ctx context.Context, domain string) (*gtsmodel.Account, error)

internal/db/bundb/account.go

@@ -64,15 +64,8 @@ func (a *accountDB) GetAccountsByIDs(ctx context.Context, ids []string) ([]*gtsm
 	accounts, err := a.state.Caches.DB.Account.LoadIDs("ID",
 		ids,
 		func(uncached []string) ([]*gtsmodel.Account, error) {
-			// Avoid querying
-			// if none uncached.
-			count := len(uncached)
-			if count == 0 {
-				return nil, nil
-			}
-
 			// Preallocate expected length of uncached accounts.
-			accounts := make([]*gtsmodel.Account, 0, count)
+			accounts := make([]*gtsmodel.Account, 0, len(uncached))
 
 			// Perform database query scanning
 			// the remaining (uncached) account IDs.
@@ -796,20 +789,14 @@ func (a *accountDB) UpdateAccount(ctx context.Context, account *gtsmodel.Account
 }
 
 func (a *accountDB) DeleteAccount(ctx context.Context, id string) error {
-	defer a.state.Caches.DB.Account.Invalidate("ID", id)
+	// Gather necessary fields from
+	// deleted for cache invaliation.
+	var deleted gtsmodel.Account
+	deleted.ID = id
 
-	// Load account into cache before attempting a delete,
+	// Delete account from database and any related links in a transaction.
-	// as we need it cached in order to trigger the invalidate
+	if err := a.db.RunInTx(ctx, nil, func(ctx context.Context, tx bun.Tx) error {
-	// callback. This in turn invalidates others.
-	_, err := a.GetAccountByID(gtscontext.SetBarebones(ctx), id)
-	if err != nil && !errors.Is(err, db.ErrNoEntries) {
-		// NOTE: even if db.ErrNoEntries is returned, we
-		// still run the below transaction to ensure related
-		// objects are appropriately deleted.
-		return err
-	}
 
-	return a.db.RunInTx(ctx, nil, func(ctx context.Context, tx bun.Tx) error {
 		// clear out any emoji links
 		if _, err := tx.
 			NewDelete().
@@ -822,44 +809,19 @@ func (a *accountDB) DeleteAccount(ctx context.Context, id string) error {
 		// delete the account
 		_, err := tx.
 			NewDelete().
-			TableExpr("? AS ?", bun.Ident("accounts"), bun.Ident("account")).
+			Model(&deleted).
-			Where("? = ?", bun.Ident("account.id"), id).
+			Where("? = ?", bun.Ident("id"), id).
+			Returning("?", bun.Ident("uri")).
 			Exec(ctx)
 		return err
-	})
+	}); err != nil {
-}
-
-func (a *accountDB) SetAccountHeaderOrAvatar(ctx context.Context, mediaAttachment *gtsmodel.MediaAttachment, accountID string) error {
-	if *mediaAttachment.Avatar && *mediaAttachment.Header {
-		return errors.New("one media attachment cannot be both header and avatar")
-	}
-
-	var column bun.Ident
-	switch {
-	case *mediaAttachment.Avatar:
-		column = bun.Ident("account.avatar_media_attachment_id")
-	case *mediaAttachment.Header:
-		column = bun.Ident("account.header_media_attachment_id")
-	default:
-		return errors.New("given media attachment was neither a header nor an avatar")
-	}
-
-	// TODO: there are probably more side effects here that need to be handled
-	if _, err := a.db.
-		NewInsert().
-		Model(mediaAttachment).
-		Exec(ctx); err != nil {
 		return err
 	}
 
-	if _, err := a.db.
+	// Invalidate cached account by its ID, manually
-		NewUpdate().
+	// call invalidate hook in case not cached.
-		TableExpr("? AS ?", bun.Ident("accounts"), bun.Ident("account")).
+	a.state.Caches.DB.Account.Invalidate("ID", id)
-		Set("? = ?", column, mediaAttachment.ID).
+	a.state.Caches.OnInvalidateAccount(&deleted)
-		Where("? = ?", bun.Ident("account.id"), accountID).
-		Exec(ctx); err != nil {
-		return err
-	}
 
 	return nil
 }

internal/db/bundb/application.go

@@ -147,15 +147,8 @@ func (a *applicationDB) GetAllTokens(ctx context.Context) ([]*gtsmodel.Token, er
 	tokens, err := a.state.Caches.DB.Token.LoadIDs("ID",
 		tokenIDs,
 		func(uncached []string) ([]*gtsmodel.Token, error) {
-			// Avoid querying
-			// if none uncached.
-			count := len(uncached)
-			if count == 0 {
-				return nil, nil
-			}
-
 			// Preallocate expected length of uncached tokens.
-			tokens := make([]*gtsmodel.Token, 0, count)
+			tokens := make([]*gtsmodel.Token, 0, len(uncached))
 
 			// Perform database query scanning
 			// the remaining (uncached) token IDs.

internal/db/bundb/conversation.go

@@ -188,15 +188,8 @@ func (c *conversationDB) getConversationsByLastStatusIDs(
 		accountID,
 		conversationLastStatusIDs,
 		func(accountID string, uncached []string) ([]*gtsmodel.Conversation, error) {
-			// Avoid querying
-			// if none uncached.
-			count := len(uncached)
-			if count == 0 {
-				return nil, nil
-			}
-
 			// Preallocate expected length of uncached conversations.
-			conversations := make([]*gtsmodel.Conversation, 0, count)
+			conversations := make([]*gtsmodel.Conversation, 0, len(uncached))
 
 			// Perform database query scanning the remaining (uncached) IDs.
 			if err := c.db.NewSelect().
@@ -267,27 +260,27 @@ func (c *conversationDB) LinkConversationToStatus(ctx context.Context, conversat
 }
 
 func (c *conversationDB) DeleteConversationByID(ctx context.Context, id string) error {
-	// Load conversation into cache before attempting a delete,
+	// Gather necessary fields from
-	// as we need it cached in order to trigger the invalidate
+	// deleted for cache invaliation.
-	// callback. This in turn invalidates others.
+	var deleted gtsmodel.Conversation
-	_, err := c.GetConversationByID(gtscontext.SetBarebones(ctx), id)
+	deleted.ID = id
-	if err != nil {
+
-		if errors.Is(err, db.ErrNoEntries) {
+	// Delete conversation from DB.
-			// not an issue.
+	if _, err := c.db.NewDelete().
-			err = nil
+		Model(&deleted).
-		}
+		Where("? = ?", bun.Ident("id"), id).
+		Returning("?", bun.Ident("account_id")).
+		Exec(ctx); err != nil &&
+		!errors.Is(err, db.ErrNoEntries) {
 		return err
 	}
 
-	// Drop this now-cached conversation on return after delete.
+	// Invalidate cached conversation by ID,
-	defer c.state.Caches.DB.Conversation.Invalidate("ID", id)
+	// manually invalidate hook in case not cached.
+	c.state.Caches.DB.Conversation.Invalidate("ID", id)
+	c.state.Caches.OnInvalidateConversation(&deleted)
 
-	// Finally delete conversation from DB.
+	return nil
-	_, err = c.db.NewDelete().
-		Model((*gtsmodel.Conversation)(nil)).
-		Where("? = ?", bun.Ident("id"), id).
-		Exec(ctx)
-	return err
 }
 
 func (c *conversationDB) DeleteConversationsByOwnerAccountID(ctx context.Context, accountID string) error {

internal/db/bundb/emoji.go

@@ -20,7 +20,6 @@ package bundb
 import (
 	"context"
 	"database/sql"
-	"errors"
 	"slices"
 	"strings"
 	"time"
@@ -70,34 +69,15 @@ func (e *emojiDB) UpdateEmoji(ctx context.Context, emoji *gtsmodel.Emoji, column
 
 func (e *emojiDB) DeleteEmojiByID(ctx context.Context, id string) error {
 	var (
+		// Gather necessary fields from
+		// deleted for cache invaliation.
 		accountIDs []string
 		statusIDs  []string
 	)
 
-	defer func() {
+	// Delete the emoji and all related links to it in a singular transaction.
-		// Invalidate cached emoji.
+	if err := e.db.RunInTx(ctx, nil, func(ctx context.Context, tx bun.Tx) error {
-		e.state.Caches.DB.Emoji.Invalidate("ID", id)
 
-		// Invalidate cached account and status IDs.
-		e.state.Caches.DB.Account.InvalidateIDs("ID", accountIDs)
-		e.state.Caches.DB.Status.InvalidateIDs("ID", statusIDs)
-	}()
-
-	// Load emoji into cache before attempting a delete,
-	// as we need it cached in order to trigger the invalidate
-	// callback. This in turn invalidates others.
-	_, err := e.GetEmojiByID(
-		gtscontext.SetBarebones(ctx),
-		id,
-	)
-	if err != nil && !errors.Is(err, db.ErrNoEntries) {
-		// NOTE: even if db.ErrNoEntries is returned, we
-		// still run the below transaction to ensure related
-		// objects are appropriately deleted.
-		return err
-	}
-
-	return e.db.RunInTx(ctx, nil, func(ctx context.Context, tx bun.Tx) error {
 		// Delete relational links between this emoji
 		// and any statuses using it, returning the
 		// status IDs so we can later update them.
@@ -195,7 +175,16 @@ func (e *emojiDB) DeleteEmojiByID(ctx context.Context, id string) error {
 		}
 
 		return nil
-	})
+	}); err != nil {
+		return err
+	}
+
+	// Invalidate emoji, and any effected statuses / accounts.
+	e.state.Caches.DB.Emoji.Invalidate("ID", id)
+	e.state.Caches.DB.Account.InvalidateIDs("ID", accountIDs)
+	e.state.Caches.DB.Status.InvalidateIDs("ID", statusIDs)
+
+	return nil
 }
 
 func (e *emojiDB) GetEmojisBy(ctx context.Context, domain string, includeDisabled bool, includeEnabled bool, shortcode string, maxShortcodeDomain string, minShortcodeDomain string, limit int) ([]*gtsmodel.Emoji, error) {
@@ -586,15 +575,8 @@ func (e *emojiDB) GetEmojisByIDs(ctx context.Context, ids []string) ([]*gtsmodel
 	emojis, err := e.state.Caches.DB.Emoji.LoadIDs("ID",
 		ids,
 		func(uncached []string) ([]*gtsmodel.Emoji, error) {
-			// Avoid querying
-			// if none uncached.
-			count := len(uncached)
-			if count == 0 {
-				return nil, nil
-			}
-
 			// Preallocate expected length of uncached emojis.
-			emojis := make([]*gtsmodel.Emoji, 0, count)
+			emojis := make([]*gtsmodel.Emoji, 0, len(uncached))
 
 			// Perform database query scanning
 			// the remaining (uncached) IDs.
@@ -657,15 +639,8 @@ func (e *emojiDB) GetEmojiCategoriesByIDs(ctx context.Context, ids []string) ([]
 	categories, err := e.state.Caches.DB.EmojiCategory.LoadIDs("ID",
 		ids,
 		func(uncached []string) ([]*gtsmodel.EmojiCategory, error) {
-			// Avoid querying
-			// if none uncached.
-			count := len(uncached)
-			if count == 0 {
-				return nil, nil
-			}
-
 			// Preallocate expected length of uncached categories.
-			categories := make([]*gtsmodel.EmojiCategory, 0, count)
+			categories := make([]*gtsmodel.EmojiCategory, 0, len(uncached))
 
 			// Perform database query scanning
 			// the remaining (uncached) IDs.

internal/db/bundb/filter.go

@@ -83,14 +83,7 @@ func (f *filterDB) GetFiltersForAccountID(ctx context.Context, accountID string)
 	filters, err := f.state.Caches.DB.Filter.LoadIDs("ID",
 		filterIDs,
 		func(uncached []string) ([]*gtsmodel.Filter, error) {
-			// Avoid querying
+			filters := make([]*gtsmodel.Filter, 0, len(uncached))
-			// if none uncached.
-			count := len(uncached)
-			if count == 0 {
-				return nil, nil
-			}
-
-			filters := make([]*gtsmodel.Filter, 0, count)
 			if err := f.db.
 				NewSelect().
 				Model(&filters).

internal/db/bundb/filterkeyword.go

@@ -113,14 +113,8 @@ func (f *filterDB) getFilterKeywords(ctx context.Context, idColumn string, id st
 	filterKeywords, err := f.state.Caches.DB.FilterKeyword.LoadIDs("ID",
 		filterKeywordIDs,
 		func(uncached []string) ([]*gtsmodel.FilterKeyword, error) {
-			// Avoid querying
+			filterKeywords := make([]*gtsmodel.FilterKeyword, 0, len(uncached))
-			// if none uncached.
-			count := len(uncached)
-			if count == 0 {
-				return nil, nil
-			}
 
-			filterKeywords := make([]*gtsmodel.FilterKeyword, 0, count)
 			if err := f.db.
 				NewSelect().
 				Model(&filterKeywords).

internal/db/bundb/filterstatus.go

@@ -100,14 +100,7 @@ func (f *filterDB) getFilterStatuses(ctx context.Context, idColumn string, id st
 	filterStatuses, err := f.state.Caches.DB.FilterStatus.LoadIDs("ID",
 		filterStatusIDs,
 		func(uncached []string) ([]*gtsmodel.FilterStatus, error) {
-			// Avoid querying
+			filterStatuses := make([]*gtsmodel.FilterStatus, 0, len(uncached))
-			// if none uncached.
-			count := len(uncached)
-			if count == 0 {
-				return nil, nil
-			}
-
-			filterStatuses := make([]*gtsmodel.FilterStatus, 0, count)
 			if err := f.db.
 				NewSelect().
 				Model(&filterStatuses).

internal/db/bundb/list.go

@@ -29,6 +29,7 @@ import (
 	"github.com/superseriousbusiness/gotosocial/internal/gtserror"
 	"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
 	"github.com/superseriousbusiness/gotosocial/internal/log"
+	"github.com/superseriousbusiness/gotosocial/internal/paging"
 	"github.com/superseriousbusiness/gotosocial/internal/state"
 	"github.com/superseriousbusiness/gotosocial/internal/util"
 	"github.com/uptrace/bun"
@@ -85,39 +86,52 @@ func (l *listDB) getList(ctx context.Context, lookup string, dbQuery func(*gtsmo
 	return list, nil
 }
 
-func (l *listDB) GetListsForAccountID(ctx context.Context, accountID string) ([]*gtsmodel.List, error) {
+func (l *listDB) GetListsByAccountID(ctx context.Context, accountID string) ([]*gtsmodel.List, error) {
-	// Fetch IDs of all lists owned by this account.
+	listIDs, err := l.getListIDsByAccountID(ctx, accountID)
-	var listIDs []string
+	if err != nil {
-	if err := l.db.
-		NewSelect().
-		TableExpr("? AS ?", bun.Ident("lists"), bun.Ident("list")).
-		Column("list.id").
-		Where("? = ?", bun.Ident("list.account_id"), accountID).
-		Order("list.id DESC").
-		Scan(ctx, &listIDs); err != nil {
 		return nil, err
 	}
-
-	if len(listIDs) == 0 {
-		return nil, nil
-	}
-
-	// Return lists by their IDs.
 	return l.GetListsByIDs(ctx, listIDs)
 }
 
-func (l *listDB) CountListsForAccountID(ctx context.Context, accountID string) (int, error) {
+func (l *listDB) CountListsByAccountID(ctx context.Context, accountID string) (int, error) {
-	return l.db.
+	listIDs, err := l.getListIDsByAccountID(ctx, accountID)
-		NewSelect().
+	return len(listIDs), err
-		Table("lists").
+}
-		Where("? = ?", bun.Ident("account_id"), accountID).
+
-		Count(ctx)
+func (l *listDB) GetListsContainingFollowID(ctx context.Context, followID string) ([]*gtsmodel.List, error) {
+	listIDs, err := l.getListIDsWithFollowID(ctx, followID)
+	if err != nil {
+		return nil, err
+	}
+	return l.GetListsByIDs(ctx, listIDs)
+}
+
+func (l *listDB) GetFollowsInList(ctx context.Context, listID string, page *paging.Page) ([]*gtsmodel.Follow, error) {
+	followIDs, err := l.GetFollowIDsInList(ctx, listID, page)
+	if err != nil {
+		return nil, err
+	}
+	return l.state.DB.GetFollowsByIDs(ctx, followIDs)
+}
+
+func (l *listDB) GetAccountsInList(ctx context.Context, listID string, page *paging.Page) ([]*gtsmodel.Account, error) {
+	accountIDs, err := l.GetAccountIDsInList(ctx, listID, page)
+	if err != nil {
+		return nil, err
+	}
+	return l.state.DB.GetAccountsByIDs(ctx, accountIDs)
+}
+
+func (l *listDB) IsAccountInList(ctx context.Context, listID string, accountID string) (bool, error) {
+	accountIDs, err := l.GetAccountIDsInList(ctx, listID, nil)
+	return slices.Contains(accountIDs, accountID), err
 }
 
 func (l *listDB) PopulateList(ctx context.Context, list *gtsmodel.List) error {
 	var (
 		err  error
-		errs = gtserror.NewMultiError(2)
+		errs gtserror.MultiError
 	)
 
 	if list.Account == nil {
@@ -131,22 +145,12 @@ func (l *listDB) PopulateList(ctx context.Context, list *gtsmodel.List) error {
 		}
 	}
 
-	if list.ListEntries == nil {
-		// List entries are not set, fetch from the database.
-		list.ListEntries, err = l.state.DB.GetListEntries(
-			gtscontext.SetBarebones(ctx),
-			list.ID,
-			"", "", "", 0,
-		)
-		if err != nil {
-			errs.Appendf("error populating list entries: %w", err)
-		}
-	}
-
 	return errs.Combine()
 }
 
 func (l *listDB) PutList(ctx context.Context, list *gtsmodel.List) error {
+	// note that inserting list will call OnInvalidateList()
+	// which will handle clearing caches other than List cache.
 	return l.state.Caches.DB.List.Store(list, func() error {
 		_, err := l.db.NewInsert().Model(list).Exec(ctx)
 		return err
@@ -160,192 +164,146 @@ func (l *listDB) UpdateList(ctx context.Context, list *gtsmodel.List, columns ..
 		columns = append(columns, "updated_at")
 	}
 
-	defer func() {
+	// Update list in the database, invalidating main list cache.
-		// Invalidate all entries for this list ID.
+	if err := l.state.Caches.DB.List.Store(list, func() error {
-		l.state.Caches.DB.ListEntry.Invalidate("ListID", list.ID)
-
-		// Invalidate this entire list's timeline.
-		if err := l.state.Timelines.List.RemoveTimeline(ctx, list.ID); err != nil {
-			log.Errorf(ctx, "error invalidating list timeline: %q", err)
-		}
-	}()
-
-	return l.state.Caches.DB.List.Store(list, func() error {
 		_, err := l.db.NewUpdate().
 			Model(list).
 			Where("? = ?", bun.Ident("list.id"), list.ID).
 			Column(columns...).
 			Exec(ctx)
 		return err
-	})
+	}); err != nil {
+		return err
+	}
+
+	// Invalidate this entire list's timeline.
+	if err := l.state.Timelines.List.RemoveTimeline(ctx, list.ID); err != nil {
+		log.Errorf(ctx, "error invalidating list timeline: %q", err)
+	}
+
+	return nil
 }
 
 func (l *listDB) DeleteListByID(ctx context.Context, id string) error {
-	// Load list by ID into cache to ensure we can perform
+	// Acquire list owner ID.
-	// all necessary cache invalidation hooks on removal.
+	var accountID string
-	_, err := l.GetListByID(
-		// Don't populate the entry;
-		// we only want the list ID.
-		gtscontext.SetBarebones(ctx),
-		id,
-	)
-	if err != nil && !errors.Is(err, db.ErrNoEntries) {
-		// NOTE: even if db.ErrNoEntries is returned, we
-		// still run the below transaction to ensure related
-		// objects are appropriately deleted.
-		return err
-	}
 
-	defer func() {
+	// Gather follow IDs of all
-		// Invalidate this list from cache.
+	// entries contained in list.
-		l.state.Caches.DB.List.Invalidate("ID", id)
+	var followIDs []string
 
-		// Invalidate this entire list's timeline.
+	// Delete all list entries associated with list, and list itself in transaction.
-		if err := l.state.Timelines.List.RemoveTimeline(ctx, id); err != nil {
+	if err := l.db.RunInTx(ctx, nil, func(ctx context.Context, tx bun.Tx) error {
-			log.Errorf(ctx, "error invalidating list timeline: %q", err)
-		}
-	}()
-
-	return l.db.RunInTx(ctx, nil, func(ctx context.Context, tx bun.Tx) error {
-		// Delete all entries attached to list.
 		if _, err := tx.NewDelete().
 			Table("list_entries").
 			Where("? = ?", bun.Ident("list_id"), id).
-			Exec(ctx); err != nil {
+			Returning("?", bun.Ident("follow_id")).
+			Exec(ctx, &followIDs); err != nil {
 			return err
 		}
 
-		// Delete the list itself.
 		_, err := tx.NewDelete().
 			Table("lists").
 			Where("? = ?", bun.Ident("id"), id).
-			Exec(ctx)
+			Returning("?", bun.Ident("account_id")).
+			Exec(ctx, &accountID)
 		return err
-	})
+	}); err != nil {
+		return err
+	}
+
+	// Invalidate the main list database cache.
+	l.state.Caches.DB.List.Invalidate("ID", id)
+
+	// Invalidate cache of list IDs owned by account.
+	l.state.Caches.DB.ListIDs.Invalidate("a" + accountID)
+
+	// Invalidate all related entry caches for this list.
+	l.invalidateEntryCaches(ctx, []string{id}, followIDs)
+
+	return nil
 }
 
-/*
+func (l *listDB) getListIDsByAccountID(ctx context.Context, accountID string) ([]string, error) {
-	LIST ENTRY functions
+	return l.state.Caches.DB.ListIDs.Load("a"+accountID, func() ([]string, error) {
-*/
+		var listIDs []string
 
-func (l *listDB) GetListEntryByID(ctx context.Context, id string) (*gtsmodel.ListEntry, error) {
+		// List IDs not in cache.
-	return l.getListEntry(
+		// Perform the DB query.
-		ctx,
+		if _, err := l.db.NewSelect().
-		"ID",
+			Table("lists").
-		func(listEntry *gtsmodel.ListEntry) error {
+			Column("id").
-			return l.db.NewSelect().
+			Where("? = ?", bun.Ident("account_id"), accountID).
-				Model(listEntry).
+			OrderExpr("? DESC", bun.Ident("created_at")).
-				Where("? = ?", bun.Ident("list_entry.id"), id).
+			Exec(ctx, &listIDs); err != nil &&
-				Scan(ctx)
+			!errors.Is(err, db.ErrNoEntries) {
-		},
-		id,
-	)
-}
-
-func (l *listDB) getListEntry(ctx context.Context, lookup string, dbQuery func(*gtsmodel.ListEntry) error, keyParts ...any) (*gtsmodel.ListEntry, error) {
-	listEntry, err := l.state.Caches.DB.ListEntry.LoadOne(lookup, func() (*gtsmodel.ListEntry, error) {
-		var listEntry gtsmodel.ListEntry
-
-		// Not cached! Perform database query.
-		if err := dbQuery(&listEntry); err != nil {
 			return nil, err
 		}
 
-		return &listEntry, nil
+		return listIDs, nil
-	}, keyParts...)
+	})
-	if err != nil {
-		return nil, err // already processed
-	}
-
-	if gtscontext.Barebones(ctx) {
-		// Only a barebones model was requested.
-		return listEntry, nil
-	}
-
-	// Further populate the list entry fields where applicable.
-	if err := l.state.DB.PopulateListEntry(ctx, listEntry); err != nil {
-		return nil, err
-	}
-
-	return listEntry, nil
 }
 
-func (l *listDB) GetListEntries(ctx context.Context,
+func (l *listDB) getListIDsWithFollowID(ctx context.Context, followID string) ([]string, error) {
-	listID string,
+	return l.state.Caches.DB.ListIDs.Load("f"+followID, func() ([]string, error) {
-	maxID string,
+		var listIDs []string
-	sinceID string,
-	minID string,
-	limit int,
-) ([]*gtsmodel.ListEntry, error) {
-	// Ensure reasonable
-	if limit < 0 {
-		limit = 0
-	}
 
-	// Make educated guess for slice size
+		// List IDs not in cache.
-	var (
+		// Perform the DB query.
-		entryIDs    = make([]string, 0, limit)
+		if _, err := l.db.NewSelect().
-		frontToBack = true
+			Table("list_entries").
-	)
+			Column("list_id").
-
+			Where("? = ?", bun.Ident("follow_id"), followID).
-	q := l.db.
+			OrderExpr("? DESC", bun.Ident("created_at")).
-		NewSelect().
+			Exec(ctx, &listIDs); err != nil &&
-		TableExpr("? AS ?", bun.Ident("list_entries"), bun.Ident("entry")).
+			!errors.Is(err, db.ErrNoEntries) {
-		// Select only IDs from table
+			return nil, err
-		Column("entry.id").
-		// Select only entries belonging to listID.
-		Where("? = ?", bun.Ident("entry.list_id"), listID)
-
-	if maxID != "" {
-		// return only entries LOWER (ie., older) than maxID
-		q = q.Where("? < ?", bun.Ident("entry.id"), maxID)
-	}
-
-	if sinceID != "" {
-		// return only entries HIGHER (ie., newer) than sinceID
-		q = q.Where("? > ?", bun.Ident("entry.id"), sinceID)
-	}
-
-	if minID != "" {
-		// return only entries HIGHER (ie., newer) than minID
-		q = q.Where("? > ?", bun.Ident("entry.id"), minID)
-
-		// page up
-		frontToBack = false
-	}
-
-	if limit > 0 {
-		// limit amount of entries returned
-		q = q.Limit(limit)
-	}
-
-	if frontToBack {
-		// Page down.
-		q = q.Order("entry.id DESC")
-	} else {
-		// Page up.
-		q = q.Order("entry.id ASC")
-	}
-
-	if err := q.Scan(ctx, &entryIDs); err != nil {
-		return nil, err
-	}
-
-	if len(entryIDs) == 0 {
-		return nil, nil
-	}
-
-	// If we're paging up, we still want entries
-	// to be sorted by ID desc, so reverse ids slice.
-	// https://zchee.github.io/golang-wiki/SliceTricks/#reversing
-	if !frontToBack {
-		for l, r := 0, len(entryIDs)-1; l < r; l, r = l+1, r-1 {
-			entryIDs[l], entryIDs[r] = entryIDs[r], entryIDs[l]
 		}
-	}
 
-	// Return list entries by their IDs.
+		return listIDs, nil
-	return l.GetListEntriesByIDs(ctx, entryIDs)
+	})
+}
+
+func (l *listDB) GetFollowIDsInList(ctx context.Context, listID string, page *paging.Page) ([]string, error) {
+	return loadPagedIDs(&l.state.Caches.DB.ListedIDs, "f"+listID, page, func() ([]string, error) {
+		var followIDs []string
+
+		// Follow IDs not in cache.
+		// Perform the DB query.
+		_, err := l.db.NewSelect().
+			Table("list_entries").
+			Column("follow_id").
+			Where("? = ?", bun.Ident("list_id"), listID).
+			OrderExpr("? DESC", bun.Ident("created_at")).
+			Exec(ctx, &followIDs)
+		if err != nil && !errors.Is(err, db.ErrNoEntries) {
+			return nil, err
+		}
+
+		return followIDs, nil
+	})
+}
+
+func (l *listDB) GetAccountIDsInList(ctx context.Context, listID string, page *paging.Page) ([]string, error) {
+	return loadPagedIDs(&l.state.Caches.DB.ListedIDs, "a"+listID, page, func() ([]string, error) {
+		var accountIDs []string
+
+		// Account IDs not in cache.
+		// Perform the DB query.
+		_, err := l.db.NewSelect().
+			Table("follows").
+			Column("follows.target_account_id").
+			Join("INNER JOIN ?", bun.Ident("list_entries")).
+			JoinOn("? = ?", bun.Ident("follows.id"), bun.Ident("list_entries.follow_id")).
+			Where("? = ?", bun.Ident("list_entries.list_id"), listID).
+			OrderExpr("? DESC", bun.Ident("list_entries.id")).
+			Exec(ctx, &accountIDs)
+		if err != nil && !errors.Is(err, db.ErrNoEntries) {
+			return nil, err
+		}
+
+		return accountIDs, nil
+	})
 }
 
 func (l *listDB) GetListsByIDs(ctx context.Context, ids []string) ([]*gtsmodel.List, error) {
@@ -353,15 +311,8 @@ func (l *listDB) GetListsByIDs(ctx context.Context, ids []string) ([]*gtsmodel.L
 	lists, err := l.state.Caches.DB.List.LoadIDs("ID",
 		ids,
 		func(uncached []string) ([]*gtsmodel.List, error) {
-			// Avoid querying
-			// if none uncached.
-			count := len(uncached)
-			if count == 0 {
-				return nil, nil
-			}
-
 			// Preallocate expected length of uncached lists.
-			lists := make([]*gtsmodel.List, 0, count)
+			lists := make([]*gtsmodel.List, 0, len(uncached))
 
 			// Perform database query scanning
 			// the remaining (uncached) IDs.
@@ -402,82 +353,6 @@ func (l *listDB) GetListsByIDs(ctx context.Context, ids []string) ([]*gtsmodel.L
 	return lists, nil
 }
 
-func (l *listDB) GetListEntriesByIDs(ctx context.Context, ids []string) ([]*gtsmodel.ListEntry, error) {
-	// Load all entry IDs via cache loader callbacks.
-	entries, err := l.state.Caches.DB.ListEntry.LoadIDs("ID",
-		ids,
-		func(uncached []string) ([]*gtsmodel.ListEntry, error) {
-			// Avoid querying
-			// if none uncached.
-			count := len(uncached)
-			if count == 0 {
-				return nil, nil
-			}
-
-			// Preallocate expected length of uncached entries.
-			entries := make([]*gtsmodel.ListEntry, 0, count)
-
-			// Perform database query scanning
-			// the remaining (uncached) IDs.
-			if err := l.db.NewSelect().
-				Model(&entries).
-				Where("? IN (?)", bun.Ident("id"), bun.In(uncached)).
-				Scan(ctx); err != nil {
-				return nil, err
-			}
-
-			return entries, nil
-		},
-	)
-	if err != nil {
-		return nil, err
-	}
-
-	// Reorder the entries by their
-	// IDs to ensure in correct order.
-	getID := func(e *gtsmodel.ListEntry) string { return e.ID }
-	util.OrderBy(entries, ids, getID)
-
-	if gtscontext.Barebones(ctx) {
-		// no need to fully populate.
-		return entries, nil
-	}
-
-	// Populate all loaded entries, removing those we fail to
-	// populate (removes needing so many nil checks everywhere).
-	entries = slices.DeleteFunc(entries, func(entry *gtsmodel.ListEntry) bool {
-		if err := l.PopulateListEntry(ctx, entry); err != nil {
-			log.Errorf(ctx, "error populating entry %s: %v", entry.ID, err)
-			return true
-		}
-		return false
-	})
-
-	return entries, nil
-}
-
-func (l *listDB) GetListEntriesForFollowID(ctx context.Context, followID string) ([]*gtsmodel.ListEntry, error) {
-	var entryIDs []string
-
-	if err := l.db.
-		NewSelect().
-		TableExpr("? AS ?", bun.Ident("list_entries"), bun.Ident("entry")).
-		// Select only IDs from table
-		Column("entry.id").
-		// Select only entries belonging with given followID.
-		Where("? = ?", bun.Ident("entry.follow_id"), followID).
-		Scan(ctx, &entryIDs); err != nil {
-		return nil, err
-	}
-
-	if len(entryIDs) == 0 {
-		return nil, nil
-	}
-
-	// Return list entries by their IDs.
-	return l.GetListEntriesByIDs(ctx, entryIDs)
-}
-
 func (l *listDB) PopulateListEntry(ctx context.Context, listEntry *gtsmodel.ListEntry) error {
 	var err error
 
@@ -496,109 +371,111 @@ func (l *listDB) PopulateListEntry(ctx context.Context, listEntry *gtsmodel.List
 }
 
 func (l *listDB) PutListEntries(ctx context.Context, entries []*gtsmodel.ListEntry) error {
-	defer func() {
+	// Insert all entries into the database in a single transaction (all or nothing!).
-		// Collect unique list IDs from the provided entries.
+	if err := l.db.RunInTx(ctx, nil, func(ctx context.Context, tx bun.Tx) error {
-		listIDs := util.Collate(entries, func(e *gtsmodel.ListEntry) string {
-			return e.ListID
-		})
-
-		for _, id := range listIDs {
-			// Invalidate the timeline for the list this entry belongs to.
-			if err := l.state.Timelines.List.RemoveTimeline(ctx, id); err != nil {
-				log.Errorf(ctx, "error invalidating list timeline: %q", err)
-			}
-		}
-	}()
-
-	// Finally, insert each list entry into the database.
-	return l.db.RunInTx(ctx, nil, func(ctx context.Context, tx bun.Tx) error {
 		for _, entry := range entries {
-			entry := entry // rescope
+			if _, err := tx.
-			if err := l.state.Caches.DB.ListEntry.Store(entry, func() error {
+				NewInsert().
-				_, err := tx.
+				Model(entry).
-					NewInsert().
+				Exec(ctx); err != nil {
-					Model(entry).
-					Exec(ctx)
-				return err
-			}); err != nil {
 				return err
 			}
 		}
 		return nil
+	}); err != nil {
+		return err
+	}
+
+	// Collect unique list IDs from the provided list entries.
+	listIDs := util.Collate(entries, func(e *gtsmodel.ListEntry) string {
+		return e.ListID
 	})
-}
 
-func (l *listDB) DeleteListEntry(ctx context.Context, id string) error {
+	// Collect unique follow IDs from the provided list entries.
-	// Load list entry into cache to ensure we can perform
+	followIDs := util.Collate(entries, func(e *gtsmodel.ListEntry) string {
-	// all necessary cache invalidation hooks on removal.
+		return e.FollowID
-	entry, err := l.GetListEntryByID(
+	})
-		// Don't populate the entry;
-		// we only want the list ID.
-		gtscontext.SetBarebones(ctx),
-		id,
-	)
-	if err != nil {
-		if errors.Is(err, db.ErrNoEntries) {
-			// Already gone.
-			return nil
-		}
-		return err
-	}
 
-	defer func() {
+	// Invalidate all related list entry caches.
-		// Invalidate this list entry upon delete.
+	l.invalidateEntryCaches(ctx, listIDs, followIDs)
-		l.state.Caches.DB.ListEntry.Invalidate("ID", id)
-
-		// Invalidate the timeline for the list this entry belongs to.
-		if err := l.state.Timelines.List.RemoveTimeline(ctx, entry.ListID); err != nil {
-			log.Errorf(ctx, "error invalidating list timeline: %q", err)
-		}
-	}()
-
-	// Finally delete the list entry.
-	_, err = l.db.NewDelete().
-		Table("list_entries").
-		Where("? = ?", bun.Ident("id"), id).
-		Exec(ctx)
-	return err
-}
-
-func (l *listDB) DeleteListEntriesForFollowID(ctx context.Context, followID string) error {
-	var entryIDs []string
-
-	// Fetch entry IDs for follow ID.
-	if err := l.db.
-		NewSelect().
-		Table("list_entries").
-		Column("id").
-		Where("? = ?", bun.Ident("follow_id"), followID).
-		Order("id DESC").
-		Scan(ctx, &entryIDs); err != nil {
-		return err
-	}
-
-	for _, id := range entryIDs {
-		// Delete each separately to trigger cache invalidations.
-		if err := l.DeleteListEntry(ctx, id); err != nil {
-			return err
-		}
-	}
 
 	return nil
 }
 
-func (l *listDB) ListIncludesAccount(ctx context.Context, listID string, accountID string) (bool, error) {
+func (l *listDB) DeleteListEntry(ctx context.Context, listID string, followID string) error {
-	exists, err := l.db.
+	// Delete list entry with given
-		NewSelect().
+	// ID, returning its list ID.
-		TableExpr("? AS ?", bun.Ident("list_entries"), bun.Ident("list_entry")).
+	if _, err := l.db.NewDelete().
-		Join(
+		Table("list_entries").
-			"JOIN ? AS ? ON ? = ?",
+		Where("? = ?", bun.Ident("list_id"), listID).
-			bun.Ident("follows"), bun.Ident("follow"),
+		Where("? = ?", bun.Ident("follow_id"), followID).
-			bun.Ident("list_entry.follow_id"), bun.Ident("follow.id"),
+		Exec(ctx, &listID); err != nil &&
-		).
+		!errors.Is(err, db.ErrNoEntries) {
-		Where("? = ?", bun.Ident("list_entry.list_id"), listID).
+		return err
-		Where("? = ?", bun.Ident("follow.target_account_id"), accountID).
+	}
-		Exists(ctx)
 
-	return exists, err
+	// Invalidate all related list entry caches.
+	l.invalidateEntryCaches(ctx, []string{listID},
+		[]string{followID})
+
+	return nil
+}
+
+func (l *listDB) DeleteAllListEntriesByFollows(ctx context.Context, followIDs ...string) error {
+	var listIDs []string
+
+	// Check for empty list.
+	if len(followIDs) == 0 {
+		return nil
+	}
+
+	// Delete all entries with follow
+	// ID, returning IDs and list IDs.
+	if _, err := l.db.NewDelete().
+		Table("list_entries").
+		Where("? IN (?)", bun.Ident("follow_id"), bun.In(followIDs)).
+		Returning("?", bun.Ident("list_id")).
+		Exec(ctx, &listIDs); err != nil &&
+		!errors.Is(err, db.ErrNoEntries) {
+		return err
+	}
+
+	// Deduplicate IDs before invalidate.
+	listIDs = util.Deduplicate(listIDs)
+
+	// Invalidate all related list entry caches.
+	l.invalidateEntryCaches(ctx, listIDs, followIDs)
+
+	return nil
+}
+
+// invalidateEntryCaches will invalidate all related ListEntry caches for given list IDs and follow IDs, including timelines.
+func (l *listDB) invalidateEntryCaches(ctx context.Context, listIDs, followIDs []string) {
+	var keys []string
+
+	// Generate ListedID keys to invalidate.
+	keys = slices.Grow(keys[:0], 2*len(listIDs))
+	for _, listID := range listIDs {
+		keys = append(keys,
+			"a"+listID,
+			"f"+listID,
+		)
+
+		// Invalidate the timeline for the list this entry belongs to.
+		if err := l.state.Timelines.List.RemoveTimeline(ctx, listID); err != nil {
+			log.Errorf(ctx, "error invalidating list timeline: %q", err)
+		}
+	}
+
+	// Invalidate ListedID slice cache entries.
+	l.state.Caches.DB.ListedIDs.Invalidate(keys...)
+
+	// Generate ListID keys to invalidate.
+	keys = slices.Grow(keys[:0], len(followIDs))
+	for _, followID := range followIDs {
+		keys = append(keys, "f"+followID)
+	}
+
+	// Invalidate ListID slice cache entries.
+	l.state.Caches.DB.ListIDs.Invalidate(keys...)
 }

internal/db/bundb/list_test.go

@@ -24,7 +24,6 @@ import (
 
 	"github.com/stretchr/testify/suite"
 	"github.com/superseriousbusiness/gotosocial/internal/db"
-	"github.com/superseriousbusiness/gotosocial/internal/gtscontext"
 	"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
 )
 
@@ -32,7 +31,7 @@ type ListTestSuite struct {
 	BunDBStandardTestSuite
 }
 
-func (suite *ListTestSuite) testStructs() (*gtsmodel.List, *gtsmodel.Account) {
+func (suite *ListTestSuite) testStructs() (*gtsmodel.List, []*gtsmodel.ListEntry, *gtsmodel.Account) {
 	testList := &gtsmodel.List{}
 	*testList = *suite.testLists["local_account_1_list_1"]
 
@@ -55,12 +54,10 @@ func (suite *ListTestSuite) testStructs() (*gtsmodel.List, *gtsmodel.Account) {
 		}
 	})
 
-	testList.ListEntries = entries
-
 	testAccount := &gtsmodel.Account{}
 	*testAccount = *suite.testAccounts["local_account_1"]
 
-	return testList, testAccount
+	return testList, entries, testAccount
 }
 
 func (suite *ListTestSuite) checkList(expected *gtsmodel.List, actual *gtsmodel.List) {
@@ -103,7 +100,7 @@ func (suite *ListTestSuite) checkListEntries(expected []*gtsmodel.ListEntry, act
 }
 
 func (suite *ListTestSuite) TestGetListByID() {
-	testList, _ := suite.testStructs()
+	testList, _, _ := suite.testStructs()
 
 	dbList, err := suite.db.GetListByID(context.Background(), testList.ID)
 	if err != nil {
@@ -111,13 +108,12 @@ func (suite *ListTestSuite) TestGetListByID() {
 	}
 
 	suite.checkList(testList, dbList)
-	suite.checkListEntries(testList.ListEntries, dbList.ListEntries)
 }
 
 func (suite *ListTestSuite) TestGetListsForAccountID() {
-	testList, testAccount := suite.testStructs()
+	testList, _, testAccount := suite.testStructs()
 
-	dbLists, err := suite.db.GetListsForAccountID(context.Background(), testAccount.ID)
+	dbLists, err := suite.db.GetListsByAccountID(context.Background(), testAccount.ID)
 	if err != nil {
 		suite.FailNow(err.Error())
 	}
@@ -129,20 +125,9 @@ func (suite *ListTestSuite) TestGetListsForAccountID() {
 	suite.checkList(testList, dbLists[0])
 }
 
-func (suite *ListTestSuite) TestGetListEntries() {
-	testList, _ := suite.testStructs()
-
-	dbListEntries, err := suite.db.GetListEntries(context.Background(), testList.ID, "", "", "", 0)
-	if err != nil {
-		suite.FailNow(err.Error())
-	}
-
-	suite.checkListEntries(testList.ListEntries, dbListEntries)
-}
-
 func (suite *ListTestSuite) TestPutList() {
 	ctx := context.Background()
-	_, testAccount := suite.testStructs()
+	_, _, testAccount := suite.testStructs()
 
 	testList := &gtsmodel.List{
 		ID:        "01H0J2PMYM54618VCV8Y8QYAT4",
@@ -166,7 +151,7 @@ func (suite *ListTestSuite) TestPutList() {
 
 func (suite *ListTestSuite) TestUpdateList() {
 	ctx := context.Background()
-	testList, _ := suite.testStructs()
+	testList, _, _ := suite.testStructs()
 
 	// Get List in the cache first.
 	dbList, err := suite.db.GetListByID(ctx, testList.ID)
@@ -192,7 +177,7 @@ func (suite *ListTestSuite) TestUpdateList() {
 
 func (suite *ListTestSuite) TestDeleteList() {
 	ctx := context.Background()
-	testList, _ := suite.testStructs()
+	testList, _, _ := suite.testStructs()
 
 	// Get List in the cache first.
 	if _, err := suite.db.GetListByID(ctx, testList.ID); err != nil {
@@ -209,18 +194,19 @@ func (suite *ListTestSuite) TestDeleteList() {
 	_, err := suite.db.GetListByID(ctx, testList.ID)
 	suite.ErrorIs(err, db.ErrNoEntries)
 
-	// All entries belonging to this
+	// All accounts / follows attached to this
-	// list should now be deleted.
+	// list should now be return empty values.
-	listEntries, err := suite.db.GetListEntries(ctx, testList.ID, "", "", "", 0)
+	listAccounts, err1 := suite.db.GetAccountsInList(ctx, testList.ID, nil)
-	if err != nil {
+	listFollows, err2 := suite.db.GetFollowsInList(ctx, testList.ID, nil)
-		suite.FailNow(err.Error())
+	suite.NoError(err1)
-	}
+	suite.NoError(err2)
-	suite.Empty(listEntries)
+	suite.Empty(listAccounts)
+	suite.Empty(listFollows)
 }
 
 func (suite *ListTestSuite) TestPutListEntries() {
 	ctx := context.Background()
-	testList, _ := suite.testStructs()
+	testList, testEntries, _ := suite.testStructs()
 
 	listEntries := []*gtsmodel.ListEntry{
 		{
@@ -244,91 +230,58 @@ func (suite *ListTestSuite) TestPutListEntries() {
 		suite.FailNow(err.Error())
 	}
 
-	// Add these entries to the test list, sort it again
+	// Get all follows stored under this list ID, to ensure
-	// to reflect what we'd expect to get from the db.
+	// the newly added list entry follows are among these.
-	testList.ListEntries = append(testList.ListEntries, listEntries...)
+	followIDs, err := suite.db.GetFollowIDsInList(ctx, testList.ID, nil)
-	slices.SortFunc(testList.ListEntries, func(a, b *gtsmodel.ListEntry) int {
+	suite.NoError(err)
-		const k = -1
+	suite.Len(followIDs, len(testEntries)+len(listEntries))
-		switch {
+	suite.Contains(followIDs, "01H0MKNFRFZS8R9WV6DBX31Y03")
-		case a.ID > b.ID:
+	suite.Contains(followIDs, "01H0MKP6RR8VEHN3GVWFBP2H30")
-			return +k
+	suite.Contains(followIDs, "01H0MKQ0KA29C6NFJ27GTZD16J")
-		case a.ID < b.ID:
-			return -k
-		default:
-			return 0
-		}
-	})
-
-	// Now get all list entries from the db.
-	// Use barebones for this because the ones
-	// we just added will fail if we try to get
-	// the nonexistent follows.
-	dbListEntries, err := suite.db.GetListEntries(
-		gtscontext.SetBarebones(ctx),
-		testList.ID,
-		"", "", "", 0)
-	if err != nil {
-		suite.FailNow(err.Error())
-	}
-
-	suite.checkListEntries(testList.ListEntries, dbListEntries)
 }
 
 func (suite *ListTestSuite) TestDeleteListEntry() {
 	ctx := context.Background()
-	testList, _ := suite.testStructs()
+	testList, testEntries, _ := suite.testStructs()
-
-	// Get List in the cache first.
-	if _, err := suite.db.GetListByID(ctx, testList.ID); err != nil {
-		suite.FailNow(err.Error())
-	}
 
 	// Delete the first entry.
-	if err := suite.db.DeleteListEntry(ctx, testList.ListEntries[0].ID); err != nil {
+	if err := suite.db.DeleteListEntry(ctx,
+		testEntries[0].ListID,
+		testEntries[0].FollowID,
+	); err != nil {
 		suite.FailNow(err.Error())
 	}
 
-	// Get list from the db again.
+	// Get all follows stored under this list ID, to ensure
-	dbList, err := suite.db.GetListByID(ctx, testList.ID)
+	// the newly removed list entry follow is now missing.
-	if err != nil {
+	followIDs, err := suite.db.GetFollowIDsInList(ctx, testList.ID, nil)
-		suite.FailNow(err.Error())
+	suite.NoError(err)
-	}
+	suite.Len(followIDs, len(testEntries)-1)
-
+	suite.NotContains(followIDs, testEntries[0].FollowID)
-	// Bodge the testlist as though
-	// we'd removed the first entry.
-	testList.ListEntries = testList.ListEntries[1:]
-	suite.checkList(testList, dbList)
 }
 
-func (suite *ListTestSuite) TestDeleteListEntriesForFollowID() {
+func (suite *ListTestSuite) TestDeleteAllListEntriesByFollows() {
 	ctx := context.Background()
-	testList, _ := suite.testStructs()
+	testList, testEntries, _ := suite.testStructs()
-
-	// Get List in the cache first.
-	if _, err := suite.db.GetListByID(ctx, testList.ID); err != nil {
-		suite.FailNow(err.Error())
-	}
 
 	// Delete the first entry.
-	if err := suite.db.DeleteListEntriesForFollowID(ctx, testList.ListEntries[0].FollowID); err != nil {
+	if err := suite.db.DeleteAllListEntriesByFollows(ctx,
+		testEntries[0].FollowID,
+	); err != nil {
 		suite.FailNow(err.Error())
 	}
 
-	// Get list from the db again.
+	// Get all follows stored under this list ID, to ensure
-	dbList, err := suite.db.GetListByID(ctx, testList.ID)
+	// the newly removed list entry follow is now missing.
-	if err != nil {
+	followIDs, err := suite.db.GetFollowIDsInList(ctx, testList.ID, nil)
-		suite.FailNow(err.Error())
+	suite.NoError(err)
-	}
+	suite.Len(followIDs, len(testEntries)-1)
-
+	suite.NotContains(followIDs, testEntries[0].FollowID)
-	// Bodge the testlist as though
-	// we'd removed the first entry.
-	testList.ListEntries = testList.ListEntries[1:]
-	suite.checkList(testList, dbList)
 }
 
 func (suite *ListTestSuite) TestListIncludesAccount() {
 	ctx := context.Background()
-	testList, _ := suite.testStructs()
+	testList, _, _ := suite.testStructs()
 
 	for accountID, expected := range map[string]bool{
 		suite.testAccounts["admin_account"].ID:   true,
@@ -336,7 +289,7 @@ func (suite *ListTestSuite) TestListIncludesAccount() {
 		suite.testAccounts["local_account_2"].ID: true,
 		"01H7074GEZJ56J5C86PFB0V2CT":             false,
 	} {
-		includes, err := suite.db.ListIncludesAccount(ctx, testList.ID, accountID)
+		includes, err := suite.db.IsAccountInList(ctx, testList.ID, accountID)
 		if err != nil {
 			suite.FailNow(err.Error())
 		}

internal/db/bundb/media.go

@@ -24,7 +24,6 @@ import (
 	"time"
 
 	"github.com/superseriousbusiness/gotosocial/internal/db"
-	"github.com/superseriousbusiness/gotosocial/internal/gtscontext"
 	"github.com/superseriousbusiness/gotosocial/internal/gtserror"
 	"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
 	"github.com/superseriousbusiness/gotosocial/internal/paging"
@@ -57,15 +56,8 @@ func (m *mediaDB) GetAttachmentsByIDs(ctx context.Context, ids []string) ([]*gts
 	media, err := m.state.Caches.DB.Media.LoadIDs("ID",
 		ids,
 		func(uncached []string) ([]*gtsmodel.MediaAttachment, error) {
-			// Avoid querying
-			// if none uncached.
-			count := len(uncached)
-			if count == 0 {
-				return nil, nil
-			}
-
 			// Preallocate expected length of uncached media attachments.
-			media := make([]*gtsmodel.MediaAttachment, 0, count)
+			media := make([]*gtsmodel.MediaAttachment, 0, len(uncached))
 
 			// Perform database query scanning
 			// the remaining (uncached) IDs.
@@ -129,30 +121,38 @@ func (m *mediaDB) UpdateAttachment(ctx context.Context, media *gtsmodel.MediaAtt
 }
 
 func (m *mediaDB) DeleteAttachment(ctx context.Context, id string) error {
-	// Load media into cache before attempting a delete,
+	// Gather necessary fields from
-	// as we need it cached in order to trigger the invalidate
+	// deleted for cache invaliation.
-	// callback. This in turn invalidates others.
+	var deleted gtsmodel.MediaAttachment
-	media, err := m.GetAttachmentByID(gtscontext.SetBarebones(ctx), id)
+	deleted.ID = id
-	if err != nil {
+
-		if errors.Is(err, db.ErrNoEntries) {
+	// Delete media attachment and update related models in new transaction.
-			// not an issue.
+	err := m.db.RunInTx(ctx, nil, func(ctx context.Context, tx bun.Tx) error {
-			err = nil
+
+		// Initially, delete the media model,
+		// returning the required fields we need.
+		if _, err := tx.NewDelete().
+			Model(&deleted).
+			Where("? = ?", bun.Ident("id"), id).
+			Returning("?, ?, ?, ?",
+				bun.Ident("account_id"),
+				bun.Ident("status_id"),
+				bun.Ident("avatar"),
+				bun.Ident("header"),
+			).
+			Exec(ctx); err != nil {
+			return gtserror.Newf("error deleting media: %w", err)
 		}
-		return err
-	}
 
-	// On return, ensure that media with ID is invalidated.
+		// If media was attached to account,
-	defer m.state.Caches.DB.Media.Invalidate("ID", id)
+		// we need to remove link from account.
-
+		if deleted.AccountID != "" {
-	// Delete media attachment in new transaction.
-	err = m.db.RunInTx(ctx, nil, func(ctx context.Context, tx bun.Tx) error {
-		if media.AccountID != "" {
 			var account gtsmodel.Account
 
 			// Get related account model.
 			if _, err := tx.NewSelect().
 				Model(&account).
-				Where("? = ?", bun.Ident("id"), media.AccountID).
+				Where("? = ?", bun.Ident("id"), deleted.AccountID).
 				Exec(ctx); err != nil && !errors.Is(err, db.ErrNoEntries) {
 				return gtserror.Newf("error selecting account: %w", err)
 			}
@@ -160,11 +160,11 @@ func (m *mediaDB) DeleteAttachment(ctx context.Context, id string) error {
 			var set func(*bun.UpdateQuery) *bun.UpdateQuery
 
 			switch {
-			case *media.Avatar && account.AvatarMediaAttachmentID == id:
+			case *deleted.Avatar && account.AvatarMediaAttachmentID == id:
 				set = func(q *bun.UpdateQuery) *bun.UpdateQuery {
 					return q.Set("? = NULL", bun.Ident("avatar_media_attachment_id"))
 				}
-			case *media.Header && account.HeaderMediaAttachmentID == id:
+			case *deleted.Header && account.HeaderMediaAttachmentID == id:
 				set = func(q *bun.UpdateQuery) *bun.UpdateQuery {
 					return q.Set("? = NULL", bun.Ident("header_media_attachment_id"))
 				}
@@ -183,13 +183,15 @@ func (m *mediaDB) DeleteAttachment(ctx context.Context, id string) error {
 			}
 		}
 
-		if media.StatusID != "" {
+		// If media was attached to a status,
+		// we need to remove link from status.
+		if deleted.StatusID != "" {
 			var status gtsmodel.Status
 
 			// Get related status model.
 			if _, err := tx.NewSelect().
 				Model(&status).
-				Where("? = ?", bun.Ident("id"), media.StatusID).
+				Where("? = ?", bun.Ident("id"), deleted.StatusID).
 				Exec(ctx); err != nil && !errors.Is(err, db.ErrNoEntries) {
 				return gtserror.Newf("error selecting status: %w", err)
 			}
@@ -213,17 +215,14 @@ func (m *mediaDB) DeleteAttachment(ctx context.Context, id string) error {
 			}
 		}
 
-		// Finally delete this media.
-		if _, err := tx.NewDelete().
-			Table("media_attachments").
-			Where("? = ?", bun.Ident("id"), id).
-			Exec(ctx); err != nil {
-			return gtserror.Newf("error deleting media: %w", err)
-		}
-
 		return nil
 	})
 
+	// Invalidate cached media with ID, manually
+	// call invalidate hook in case not in cache.
+	m.state.Caches.DB.Media.Invalidate("ID", id)
+	m.state.Caches.OnInvalidateMedia(&deleted)
+
 	return err
 }
 

internal/db/bundb/mention.go

@@ -69,15 +69,8 @@ func (m *mentionDB) GetMentions(ctx context.Context, ids []string) ([]*gtsmodel.
 	mentions, err := m.state.Caches.DB.Mention.LoadIDs("ID",
 		ids,
 		func(uncached []string) ([]*gtsmodel.Mention, error) {
-			// Avoid querying
-			// if none uncached.
-			count := len(uncached)
-			if count == 0 {
-				return nil, nil
-			}
-
 			// Preallocate expected length of uncached mentions.
-			mentions := make([]*gtsmodel.Mention, 0, count)
+			mentions := make([]*gtsmodel.Mention, 0, len(uncached))
 
 			// Perform database query scanning
 			// the remaining (uncached) IDs.
@@ -166,24 +159,18 @@ func (m *mentionDB) PutMention(ctx context.Context, mention *gtsmodel.Mention) e
 }
 
 func (m *mentionDB) DeleteMentionByID(ctx context.Context, id string) error {
-	defer m.state.Caches.DB.Mention.Invalidate("ID", id)
+	// Delete mention with given ID,
-
+	// returning the deleted models.
-	// Load mention into cache before attempting a delete,
+	if _, err := m.db.NewDelete().
-	// as we need it cached in order to trigger the invalidate
+		Table("mentions").
-	// callback. This in turn invalidates others.
+		Where("? = ?", bun.Ident("id"), id).
-	_, err := m.GetMention(gtscontext.SetBarebones(ctx), id)
+		Exec(ctx); err != nil &&
-	if err != nil {
+		!errors.Is(err, db.ErrNoEntries) {
-		if errors.Is(err, db.ErrNoEntries) {
-			// not an issue.
-			err = nil
-		}
 		return err
 	}
 
-	// Finally delete mention from DB.
+	// Invalidate the cached mention with ID.
-	_, err = m.db.NewDelete().
+	m.state.Caches.DB.Mention.Invalidate("ID", id)
-		Table("mentions").
+
-		Where("? = ?", bun.Ident("id"), id).
+	return nil
-		Exec(ctx)
-	return err
 }

internal/db/bundb/move.go

@@ -234,13 +234,17 @@ func (m *moveDB) UpdateMove(ctx context.Context, move *gtsmodel.Move, columns ..
 }
 
 func (m *moveDB) DeleteMoveByID(ctx context.Context, id string) error {
-	defer m.state.Caches.DB.Move.Invalidate("ID", id)
+	// Delete move with given ID.
-
+	if _, err := m.db.NewDelete().
-	_, err := m.db.
-		NewDelete().
 		TableExpr("? AS ?", bun.Ident("moves"), bun.Ident("move")).
 		Where("? = ?", bun.Ident("move.id"), id).
-		Exec(ctx)
+		Exec(ctx); err != nil &&
+		!errors.Is(err, db.ErrNoEntries) {
+		return nil
+	}
 
-	return err
+	// Invalidate the cached move model with ID.
+	m.state.Caches.DB.Move.Invalidate("ID", id)
+
+	return nil
 }

internal/db/bundb/notification.go

@@ -22,6 +22,7 @@ import (
 	"errors"
 	"slices"
 
+	"github.com/superseriousbusiness/gotosocial/internal/db"
 	"github.com/superseriousbusiness/gotosocial/internal/gtscontext"
 	"github.com/superseriousbusiness/gotosocial/internal/gtserror"
 	"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
@@ -107,15 +108,8 @@ func (n *notificationDB) GetNotificationsByIDs(ctx context.Context, ids []string
 	notifs, err := n.state.Caches.DB.Notification.LoadIDs("ID",
 		ids,
 		func(uncached []string) ([]*gtsmodel.Notification, error) {
-			// Avoid querying
-			// if none uncached.
-			count := len(uncached)
-			if count == 0 {
-				return nil, nil
-			}
-
 			// Preallocate expected length of uncached notifications.
-			notifs := make([]*gtsmodel.Notification, 0, count)
+			notifs := make([]*gtsmodel.Notification, 0, len(uncached))
 
 			// Perform database query scanning
 			// the remaining (uncached) IDs.
@@ -299,7 +293,8 @@ func (n *notificationDB) DeleteNotificationByID(ctx context.Context, id string)
 		NewDelete().
 		Table("notifications").
 		Where("? = ?", bun.Ident("id"), id).
-		Exec(ctx); err != nil {
+		Exec(ctx); err != nil &&
+		!errors.Is(err, db.ErrNoEntries) {
 		return err
 	}
 
@@ -310,7 +305,7 @@ func (n *notificationDB) DeleteNotificationByID(ctx context.Context, id string)
 
 func (n *notificationDB) DeleteNotifications(ctx context.Context, types []string, targetAccountID string, originAccountID string) error {
 	if targetAccountID == "" && originAccountID == "" {
-		return errors.New("DeleteNotifications: one of targetAccountID or originAccountID must be set")
+		return gtserror.New("one of targetAccountID or originAccountID must be set")
 	}
 
 	q := n.db.

internal/db/bundb/poll.go

@@ -177,17 +177,36 @@ func (p *pollDB) UpdatePoll(ctx context.Context, poll *gtsmodel.Poll, cols ...st
 }
 
 func (p *pollDB) DeletePollByID(ctx context.Context, id string) error {
-	// Delete poll by ID from database.
+	// Delete poll vote with ID, and its associated votes from the database.
-	if _, err := p.db.NewDelete().
+	if err := p.db.RunInTx(ctx, nil, func(ctx context.Context, tx bun.Tx) error {
-		Table("polls").
+
-		Where("? = ?", bun.Ident("id"), id).
+		// Delete poll from database.
-		Exec(ctx); err != nil {
+		if _, err := tx.NewDelete().
+			Table("polls").
+			Where("? = ?", bun.Ident("id"), id).
+			Exec(ctx); err != nil {
+			return err
+		}
+
+		// Delete the poll votes.
+		_, err := tx.NewDelete().
+			Table("poll_votes").
+			Where("? = ?", bun.Ident("poll_id"), id).
+			Exec(ctx)
+		return err
+	}); err != nil {
 		return err
 	}
 
-	// Invalidate poll by ID from cache.
+	// Wrap provided ID in a poll
+	// model for calling cache hook.
+	var deleted gtsmodel.Poll
+	deleted.ID = id
+
+	// Invalidate cached poll with ID, manually
+	// call invalidate hook in case not cached.
 	p.state.Caches.DB.Poll.Invalidate("ID", id)
-	p.state.Caches.DB.PollVoteIDs.Invalidate(id)
+	p.state.Caches.OnInvalidatePoll(&deleted)
 
 	return nil
 }
@@ -274,15 +293,8 @@ func (p *pollDB) GetPollVotes(ctx context.Context, pollID string) ([]*gtsmodel.P
 	votes, err := p.state.Caches.DB.PollVote.LoadIDs("ID",
 		voteIDs,
 		func(uncached []string) ([]*gtsmodel.PollVote, error) {
-			// Avoid querying
-			// if none uncached.
-			count := len(uncached)
-			if count == 0 {
-				return nil, nil
-			}
-
 			// Preallocate expected length of uncached votes.
-			votes := make([]*gtsmodel.PollVote, 0, count)
+			votes := make([]*gtsmodel.PollVote, 0, len(uncached))
 
 			// Perform database query scanning
 			// the remaining (uncached) IDs.
@@ -391,148 +403,44 @@ func (p *pollDB) PutPollVote(ctx context.Context, vote *gtsmodel.PollVote) error
 	})
 }
 
-func (p *pollDB) DeletePollVotes(ctx context.Context, pollID string) error {
-	err := p.db.RunInTx(ctx, nil, func(ctx context.Context, tx bun.Tx) error {
-		// Delete all votes in poll.
-		res, err := tx.NewDelete().
-			Table("poll_votes").
-			Where("? = ?", bun.Ident("poll_id"), pollID).
-			Exec(ctx)
-		if err != nil {
-			// irrecoverable
-			return err
-		}
-
-		ra, err := res.RowsAffected()
-		if err != nil {
-			// irrecoverable
-			return err
-		}
-
-		if ra == 0 {
-			// No poll votes deleted,
-			// nothing to update.
-			return nil
-		}
-
-		// Select current poll counts from DB,
-		// taking minimal columns needed to
-		// increment/decrement votes.
-		var poll gtsmodel.Poll
-		switch err := tx.NewSelect().
-			Model(&poll).
-			Column("options", "votes", "voters").
-			Where("? = ?", bun.Ident("id"), pollID).
-			Scan(ctx); {
-
-		case err == nil:
-			// no issue.
-
-		case errors.Is(err, db.ErrNoEntries):
-			// no votes found,
-			// return here.
-			return nil
-
-		default:
-			// irrecoverable.
-			return err
-		}
-
-		// Zero all counts.
-		poll.ResetVotes()
-
-		// Finally, update the poll entry.
-		_, err = tx.NewUpdate().
-			Model(&poll).
-			Column("votes", "voters").
-			Where("? = ?", bun.Ident("id"), pollID).
-			Exec(ctx)
-		return err
-	})
-
-	if err != nil {
-		return err
-	}
-
-	// Invalidate poll vote and poll entry from caches.
-	p.state.Caches.DB.Poll.Invalidate("ID", pollID)
-	p.state.Caches.DB.PollVote.Invalidate("PollID", pollID)
-	p.state.Caches.DB.PollVoteIDs.Invalidate(pollID)
-
-	return nil
-}
-
 func (p *pollDB) DeletePollVoteBy(ctx context.Context, pollID string, accountID string) error {
-	err := p.db.RunInTx(ctx, nil, func(ctx context.Context, tx bun.Tx) error {
+	// Gather necessary fields from
-		// Slice should only ever be of length
+	// deleted for cache invaliation.
-		// 0 or 1; it's a slice of slices only
+	var deleted gtsmodel.PollVote
-		// because we can't LIMIT deletes to 1.
+	deleted.AccountID = accountID
-		var choicesSlice [][]int
+	deleted.PollID = pollID
+
+	// Delete the poll vote with given poll and account IDs, and update vote counts.
+	if err := p.db.RunInTx(ctx, nil, func(ctx context.Context, tx bun.Tx) error {
 
 		// Delete vote in poll by account,
-		// returning the ID + choices of the vote.
+		// returning deleted model info.
-		if err := tx.NewDelete().
+		switch _, err := tx.NewDelete().
-			Table("poll_votes").
+			Model(&deleted).
 			Where("? = ?", bun.Ident("poll_id"), pollID).
 			Where("? = ?", bun.Ident("account_id"), accountID).
 			Returning("?", bun.Ident("choices")).
-			Scan(ctx, &choicesSlice); err != nil {
+			Exec(ctx); {
-			// irrecoverable.
-			return err
-		}
-
-		if len(choicesSlice) != 1 {
-			// No poll votes by this
-			// acct on this poll.
-			return nil
-		}
-
-		// Extract the *actual* choices.
-		choices := choicesSlice[0]
-
-		// Select current poll counts from DB,
-		// taking minimal columns needed to
-		// increment/decrement votes.
-		var poll gtsmodel.Poll
-		switch err := tx.NewSelect().
-			Model(&poll).
-			Column("options", "votes", "voters").
-			Where("? = ?", bun.Ident("id"), pollID).
-			Scan(ctx); {
 
 		case err == nil:
-			// no issue.
+			// no issue
-
 		case errors.Is(err, db.ErrNoEntries):
-			// no poll found,
-			// return here.
 			return nil
-
 		default:
-			// irrecoverable.
 			return err
 		}
 
-		// Decrement votes for choices.
+		// Update the votes for this deleted poll.
-		poll.DecrementVotes(choices)
+		err := updatePollCounts(ctx, tx, &deleted)
-
-		// Finally, update the poll entry.
-		_, err := tx.NewUpdate().
-			Model(&poll).
-			Column("votes", "voters").
-			Where("? = ?", bun.Ident("id"), pollID).
-			Exec(ctx)
 		return err
-	})
+	}); err != nil {
-
-	if err != nil {
 		return err
 	}
 
-	// Invalidate poll vote and poll entry from caches.
+	// Invalidate the poll vote cache by given poll + account IDs, also
-	p.state.Caches.DB.Poll.Invalidate("ID", pollID)
+	// manually call invalidation hook in case not actually stored in cache.
 	p.state.Caches.DB.PollVote.Invalidate("PollID,AccountID", pollID, accountID)
-	p.state.Caches.DB.PollVoteIDs.Invalidate(pollID)
+	p.state.Caches.OnInvalidatePollVote(&deleted)
 
 	return nil
 }
@@ -562,6 +470,48 @@ func (p *pollDB) DeletePollVotesByAccountID(ctx context.Context, accountID strin
 	return nil
 }
 
+// updatePollCounts updates the vote counts on a poll for the given deleted PollVote model.
+func updatePollCounts(ctx context.Context, tx bun.Tx, deleted *gtsmodel.PollVote) error {
+
+	// Select current poll counts from DB,
+	// taking minimal columns needed to
+	// increment/decrement votes.
+	var poll gtsmodel.Poll
+	switch err := tx.NewSelect().
+		Model(&poll).
+		Column("options", "votes", "voters").
+		Where("? = ?", bun.Ident("id"), deleted.PollID).
+		Scan(ctx); {
+
+	case err == nil:
+		// no issue.
+
+	case errors.Is(err, db.ErrNoEntries):
+		// no poll found,
+		// return here.
+		return nil
+
+	default:
+		// irrecoverable.
+		return err
+	}
+
+	// Decrement votes for these choices.
+	poll.DecrementVotes(deleted.Choices)
+
+	// Finally, update the poll entry.
+	if _, err := tx.NewUpdate().
+		Model(&poll).
+		Column("votes", "voters").
+		Where("? = ?", bun.Ident("id"), deleted.PollID).
+		Exec(ctx); err != nil &&
+		!errors.Is(err, db.ErrNoEntries) {
+		return err
+	}
+
+	return nil
+}
+
 // newSelectPollVotes returns a new select query for all rows in the poll_votes table with poll_id = pollID.
 func newSelectPollVotes(db *bun.DB, pollID string) *bun.SelectQuery {
 	return db.NewSelect().

internal/db/bundb/poll_test.go

@@ -26,7 +26,6 @@ import (
 
 	"github.com/stretchr/testify/suite"
 	"github.com/superseriousbusiness/gotosocial/internal/db"
-	"github.com/superseriousbusiness/gotosocial/internal/gtscontext"
 	"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
 	"github.com/superseriousbusiness/gotosocial/internal/id"
 	"github.com/superseriousbusiness/gotosocial/internal/util"
@@ -286,41 +285,6 @@ func (suite *PollTestSuite) TestDeletePoll() {
 	}
 }
 
-func (suite *PollTestSuite) TestDeletePollVotes() {
-	// Create a new context for this test.
-	ctx, cncl := context.WithCancel(context.Background())
-	defer cncl()
-
-	for _, poll := range suite.testPolls {
-		// Delete votes associated with poll from database.
-		err := suite.db.DeletePollVotes(ctx, poll.ID)
-		suite.NoError(err)
-
-		// Fetch latest version of poll from database.
-		poll, err = suite.db.GetPollByID(
-			gtscontext.SetBarebones(ctx),
-			poll.ID,
-		)
-		suite.NoError(err)
-
-		// Check that poll counts are all zero.
-		suite.Equal(*poll.Voters, 0)
-		suite.Equal(make([]int, len(poll.Options)), poll.Votes)
-	}
-}
-
-func (suite *PollTestSuite) TestDeletePollVotesNoPoll() {
-	// Create a new context for this test.
-	ctx, cncl := context.WithCancel(context.Background())
-	defer cncl()
-
-	// Try to delete votes of nonexistent poll.
-	nonPollID := "01HF6V4XWTSZWJ80JNPPDTD4DB"
-
-	err := suite.db.DeletePollVotes(ctx, nonPollID)
-	suite.NoError(err)
-}
-
 func (suite *PollTestSuite) TestDeletePollVotesBy() {
 	ctx, cncl := context.WithCancel(context.Background())
 	defer cncl()

internal/db/bundb/relationship_block.go

@@ -105,15 +105,8 @@ func (r *relationshipDB) GetBlocksByIDs(ctx context.Context, ids []string) ([]*g
 	blocks, err := r.state.Caches.DB.Block.LoadIDs("ID",
 		ids,
 		func(uncached []string) ([]*gtsmodel.Block, error) {
-			// Avoid querying
-			// if none uncached.
-			count := len(uncached)
-			if count == 0 {
-				return nil, nil
-			}
-
 			// Preallocate expected length of uncached blocks.
-			blocks := make([]*gtsmodel.Block, 0, count)
+			blocks := make([]*gtsmodel.Block, 0, len(uncached))
 
 			// Perform database query scanning
 			// the remaining (uncached) IDs.
@@ -222,94 +215,93 @@ func (r *relationshipDB) PutBlock(ctx context.Context, block *gtsmodel.Block) er
 }
 
 func (r *relationshipDB) DeleteBlockByID(ctx context.Context, id string) error {
-	// Load block into cache before attempting a delete,
+	// Gather necessary fields from
-	// as we need it cached in order to trigger the invalidate
+	// deleted for cache invaliation.
-	// callback. This in turn invalidates others.
+	var deleted gtsmodel.Block
-	_, err := r.GetBlockByID(gtscontext.SetBarebones(ctx), id)
+
-	if err != nil {
+	// Delete block with given ID,
-		if errors.Is(err, db.ErrNoEntries) {
+	// returning the deleted models.
-			// not an issue.
+	if _, err := r.db.NewDelete().
-			err = nil
+		Model(&deleted).
-		}
+		Where("? = ?", bun.Ident("id"), id).
+		Returning("?, ?",
+			bun.Ident("account_id"),
+			bun.Ident("target_account_id"),
+		).
+		Exec(ctx); err != nil &&
+		!errors.Is(err, db.ErrNoEntries) {
 		return err
 	}
 
-	// Drop this now-cached block on return after delete.
+	// Invalidate cached block with ID, manually
-	defer r.state.Caches.DB.Block.Invalidate("ID", id)
+	// call invalidate hook in case not cached.
+	r.state.Caches.DB.Block.Invalidate("ID", id)
+	r.state.Caches.OnInvalidateBlock(&deleted)
 
-	// Finally delete block from DB.
+	return nil
-	_, err = r.db.NewDelete().
-		Table("blocks").
-		Where("? = ?", bun.Ident("id"), id).
-		Exec(ctx)
-	return err
 }
 
 func (r *relationshipDB) DeleteBlockByURI(ctx context.Context, uri string) error {
-	// Load block into cache before attempting a delete,
+	// Gather necessary fields from
-	// as we need it cached in order to trigger the invalidate
+	// deleted for cache invaliation.
-	// callback. This in turn invalidates others.
+	var deleted gtsmodel.Block
-	_, err := r.GetBlockByURI(gtscontext.SetBarebones(ctx), uri)
+
-	if err != nil {
+	// Delete block with given URI,
-		if errors.Is(err, db.ErrNoEntries) {
+	// returning the deleted models.
-			// not an issue.
+	if _, err := r.db.NewDelete().
-			err = nil
+		Model(&deleted).
-		}
+		Where("? = ?", bun.Ident("uri"), uri).
+		Returning("?, ?",
+			bun.Ident("account_id"),
+			bun.Ident("target_account_id"),
+		).
+		Exec(ctx); err != nil &&
+		!errors.Is(err, db.ErrNoEntries) {
 		return err
 	}
 
-	// Drop this now-cached block on return after delete.
+	// Invalidate cached block with URI, manually
-	defer r.state.Caches.DB.Block.Invalidate("URI", uri)
+	// call invalidate hook in case not cached.
+	r.state.Caches.DB.Block.Invalidate("URI", uri)
+	r.state.Caches.OnInvalidateBlock(&deleted)
 
-	// Finally delete block from DB.
+	return nil
-	_, err = r.db.NewDelete().
-		Table("blocks").
-		Where("? = ?", bun.Ident("uri"), uri).
-		Exec(ctx)
-	return err
 }
 
 func (r *relationshipDB) DeleteAccountBlocks(ctx context.Context, accountID string) error {
-	var blockIDs []string
+	// Gather necessary fields from
+	// deleted for cache invaliation.
+	var deleted []*gtsmodel.Block
 
-	// Get full list of IDs.
+	// Delete all blocks either from
-	if err := r.db.NewSelect().
+	// account, or targeting account,
-		Column("id").
+	// returning the deleted models.
-		Table("blocks").
+	if _, err := r.db.NewDelete().
+		Model(&deleted).
 		WhereOr("? = ? OR ? = ?",
 			bun.Ident("account_id"),
 			accountID,
 			bun.Ident("target_account_id"),
 			accountID,
 		).
-		Scan(ctx, &blockIDs); err != nil {
+		Returning("?, ?",
+			bun.Ident("account_id"),
+			bun.Ident("target_account_id"),
+		).
+		Exec(ctx); err != nil &&
+		!errors.Is(err, db.ErrNoEntries) {
 		return err
 	}
 
-	if len(blockIDs) == 0 {
+	// Invalidate all account's incoming / outoing blocks.
-		// Nothing
+	r.state.Caches.DB.Block.Invalidate("AccountID", accountID)
-		// to delete.
+	r.state.Caches.DB.Block.Invalidate("TargetAccountID", accountID)
-		return nil
+
+	// In case not all blocks were in
+	// cache, manually call invalidate hooks.
+	for _, block := range deleted {
+		r.state.Caches.OnInvalidateBlock(block)
 	}
 
-	defer func() {
+	return nil
-		// Invalidate all account's incoming / outoing blocks on return.
-		r.state.Caches.DB.Block.Invalidate("AccountID", accountID)
-		r.state.Caches.DB.Block.Invalidate("TargetAccountID", accountID)
-	}()
-
-	// Load all blocks into cache, this *really* isn't great
-	// but it is the only way we can ensure we invalidate all
-	// related caches correctly (e.g. visibility).
-	_, err := r.GetAccountBlocks(ctx, accountID, nil)
-	if err != nil && !errors.Is(err, db.ErrNoEntries) {
-		return err
-	}
-
-	// Finally delete all from DB.
-	_, err = r.db.NewDelete().
-		Table("blocks").
-		Where("? IN (?)", bun.Ident("id"), bun.In(blockIDs)).
-		Exec(ctx)
-	return err
 }

internal/db/bundb/relationship_follow.go

@@ -20,7 +20,6 @@ package bundb
 import (
 	"context"
 	"errors"
-	"fmt"
 	"slices"
 	"time"
 
@@ -82,15 +81,8 @@ func (r *relationshipDB) GetFollowsByIDs(ctx context.Context, ids []string) ([]*
 	follows, err := r.state.Caches.DB.Follow.LoadIDs("ID",
 		ids,
 		func(uncached []string) ([]*gtsmodel.Follow, error) {
-			// Avoid querying
-			// if none uncached.
-			count := len(uncached)
-			if count == 0 {
-				return nil, nil
-			}
-
 			// Preallocate expected length of uncached follows.
-			follows := make([]*gtsmodel.Follow, 0, count)
+			follows := make([]*gtsmodel.Follow, 0, len(uncached))
 
 			// Perform database query scanning
 			// the remaining (uncached) IDs.
@@ -252,139 +244,155 @@ func (r *relationshipDB) UpdateFollow(ctx context.Context, follow *gtsmodel.Foll
 	})
 }
 
-func (r *relationshipDB) deleteFollow(ctx context.Context, id string) error {
+func (r *relationshipDB) DeleteFollow(
-	// Delete the follow itself using the given ID.
+	ctx context.Context,
+	sourceAccountID string,
+	targetAccountID string,
+) error {
+
+	// Gather necessary fields from
+	// deleted for cache invaliation.
+	var deleted gtsmodel.Follow
+	deleted.AccountID = sourceAccountID
+	deleted.TargetAccountID = targetAccountID
+
+	// Delete follow from origin
+	// account, to targeting account,
+	// returning the deleted models.
 	if _, err := r.db.NewDelete().
-		Table("follows").
+		Model(&deleted).
-		Where("? = ?", bun.Ident("id"), id).
+		Where("? = ?", bun.Ident("account_id"), sourceAccountID).
-		Exec(ctx); err != nil {
+		Where("? = ?", bun.Ident("target_account_id"), targetAccountID).
+		Returning("?", bun.Ident("id")).
+		Exec(ctx); err != nil &&
+		!errors.Is(err, db.ErrNoEntries) {
 		return err
 	}
 
-	// Delete every list entry that used this followID.
+	// Invalidate cached follow with source / target account IDs,
-	if err := r.state.DB.DeleteListEntriesForFollowID(ctx, id); err != nil {
+	// manually calling invalidate hook in case it isn't cached.
-		return fmt.Errorf("deleteFollow: error deleting list entries: %w", err)
+	r.state.Caches.DB.Follow.Invalidate("AccountID,TargetAccountID",
+		sourceAccountID, targetAccountID)
+	r.state.Caches.OnInvalidateFollow(&deleted)
+
+	// Delete every list entry that was created targetting this follow ID.
+	if err := r.state.DB.DeleteAllListEntriesByFollows(ctx, deleted.ID); err != nil {
+		return gtserror.Newf("error deleting list entries: %w", err)
 	}
 
 	return nil
 }
 
-func (r *relationshipDB) DeleteFollow(ctx context.Context, sourceAccountID string, targetAccountID string) error {
-	// Load follow into cache before attempting a delete,
-	// as we need it cached in order to trigger the invalidate
-	// callback. This in turn invalidates others.
-	follow, err := r.GetFollow(
-		gtscontext.SetBarebones(ctx),
-		sourceAccountID,
-		targetAccountID,
-	)
-	if err != nil {
-		if errors.Is(err, db.ErrNoEntries) {
-			// Already gone.
-			return nil
-		}
-		return err
-	}
-
-	// Drop this now-cached follow on return after delete.
-	defer r.state.Caches.DB.Follow.Invalidate("AccountID,TargetAccountID", sourceAccountID, targetAccountID)
-
-	// Finally delete follow from DB.
-	return r.deleteFollow(ctx, follow.ID)
-}
-
 func (r *relationshipDB) DeleteFollowByID(ctx context.Context, id string) error {
-	// Load follow into cache before attempting a delete,
+	// Gather necessary fields from
-	// as we need it cached in order to trigger the invalidate
+	// deleted for cache invaliation.
-	// callback. This in turn invalidates others.
+	var deleted gtsmodel.Follow
-	follow, err := r.GetFollowByID(gtscontext.SetBarebones(ctx), id)
+	deleted.ID = id
-	if err != nil {
+
-		if errors.Is(err, db.ErrNoEntries) {
+	// Delete follow with given ID,
-			// Already gone.
+	// returning the deleted models.
-			return nil
+	if _, err := r.db.NewDelete().
-		}
+		Model(&deleted).
+		Where("? = ?", bun.Ident("id"), id).
+		Returning("?, ?",
+			bun.Ident("account_id"),
+			bun.Ident("target_account_id"),
+		).
+		Exec(ctx); err != nil &&
+		!errors.Is(err, db.ErrNoEntries) {
 		return err
 	}
 
-	// Drop this now-cached follow on return after delete.
+	// Invalidate cached follow with ID, manually
-	defer r.state.Caches.DB.Follow.Invalidate("ID", id)
+	// call invalidate hook in case not cached.
+	r.state.Caches.DB.Follow.Invalidate("ID", id)
+	r.state.Caches.OnInvalidateFollow(&deleted)
 
-	// Finally delete follow from DB.
+	// Delete every list entry that was created targetting this follow ID.
-	return r.deleteFollow(ctx, follow.ID)
+	if err := r.state.DB.DeleteAllListEntriesByFollows(ctx, id); err != nil {
+		return gtserror.Newf("error deleting list entries: %w", err)
+	}
+
+	return nil
 }
 
 func (r *relationshipDB) DeleteFollowByURI(ctx context.Context, uri string) error {
-	// Load follow into cache before attempting a delete,
+	// Gather necessary fields from
-	// as we need it cached in order to trigger the invalidate
+	// deleted for cache invaliation.
-	// callback. This in turn invalidates others.
+	var deleted gtsmodel.Follow
-	follow, err := r.GetFollowByURI(gtscontext.SetBarebones(ctx), uri)
+
-	if err != nil {
+	// Delete follow with given URI,
-		if errors.Is(err, db.ErrNoEntries) {
+	// returning the deleted models.
-			// Already gone.
+	if _, err := r.db.NewDelete().
-			return nil
+		Model(&deleted).
-		}
+		Where("? = ?", bun.Ident("uri"), uri).
+		Returning("?, ?, ?",
+			bun.Ident("id"),
+			bun.Ident("account_id"),
+			bun.Ident("target_account_id"),
+		).
+		Exec(ctx); err != nil &&
+		!errors.Is(err, db.ErrNoEntries) {
 		return err
 	}
 
-	// Drop this now-cached follow on return after delete.
+	// Invalidate cached follow with URI, manually
-	defer r.state.Caches.DB.Follow.Invalidate("URI", uri)
+	// call invalidate hook in case not cached.
+	r.state.Caches.DB.Follow.Invalidate("URI", uri)
+	r.state.Caches.OnInvalidateFollow(&deleted)
 
-	// Finally delete follow from DB.
+	// Delete every list entry that was created targetting this follow ID.
-	return r.deleteFollow(ctx, follow.ID)
+	if err := r.state.DB.DeleteAllListEntriesByFollows(ctx, deleted.ID); err != nil {
+		return gtserror.Newf("error deleting list entries: %w", err)
+	}
+
+	return nil
 }
 
 func (r *relationshipDB) DeleteAccountFollows(ctx context.Context, accountID string) error {
-	var followIDs []string
+	// Gather necessary fields from
+	// deleted for cache invaliation.
+	var deleted []*gtsmodel.Follow
 
-	// Get full list of IDs.
+	// Delete all follows either from
-	if _, err := r.db.
+	// account, or targeting account,
-		NewSelect().
+	// returning the deleted models.
-		Column("id").
+	if _, err := r.db.NewDelete().
-		Table("follows").
+		Model(&deleted).
 		WhereOr("? = ? OR ? = ?",
 			bun.Ident("account_id"),
 			accountID,
 			bun.Ident("target_account_id"),
 			accountID,
 		).
-		Exec(ctx, &followIDs); err != nil {
+		Returning("?, ?, ?",
+			bun.Ident("id"),
+			bun.Ident("account_id"),
+			bun.Ident("target_account_id"),
+		).
+		Exec(ctx); err != nil &&
+		!errors.Is(err, db.ErrNoEntries) {
 		return err
 	}
 
-	if len(followIDs) == 0 {
+	// Gather the follow IDs that were deleted for removing related list entries.
-		// Nothing
+	followIDs := util.Gather(nil, deleted, func(follow *gtsmodel.Follow) string {
-		// to delete.
+		return follow.ID
-		return nil
+	})
+
+	// Delete every list entry that was created targetting any of these follow IDs.
+	if err := r.state.DB.DeleteAllListEntriesByFollows(ctx, followIDs...); err != nil {
+		return gtserror.Newf("error deleting list entries: %w", err)
 	}
 
-	defer func() {
+	// Invalidate all account's incoming / outoing follows.
-		// Invalidate all account's incoming / outoing follows on return.
+	r.state.Caches.DB.Follow.Invalidate("AccountID", accountID)
-		r.state.Caches.DB.Follow.Invalidate("AccountID", accountID)
+	r.state.Caches.DB.Follow.Invalidate("TargetAccountID", accountID)
-		r.state.Caches.DB.Follow.Invalidate("TargetAccountID", accountID)
-	}()
 
-	// Load all follows into cache, this *really* isn't great
+	// In case not all follow were in
-	// but it is the only way we can ensure we invalidate all
+	// cache, manually call invalidate hooks.
-	// related caches correctly (e.g. visibility).
+	for _, follow := range deleted {
-	_, err := r.GetAccountFollows(ctx, accountID, nil)
+		r.state.Caches.OnInvalidateFollow(follow)
-	if err != nil && !errors.Is(err, db.ErrNoEntries) {
-		return err
-	}
-
-	// Delete all follows from DB.
-	_, err = r.db.NewDelete().
-		Table("follows").
-		Where("? IN (?)", bun.Ident("id"), bun.In(followIDs)).
-		Exec(ctx)
-	if err != nil {
-		return err
-	}
-
-	for _, id := range followIDs {
-		// Finally, delete all list entries associated with each follow ID.
-		if err := r.state.DB.DeleteListEntriesForFollowID(ctx, id); err != nil {
-			return err
-		}
 	}
 
 	return nil

internal/db/bundb/relationship_follow_req.go

@@ -81,15 +81,8 @@ func (r *relationshipDB) GetFollowRequestsByIDs(ctx context.Context, ids []strin
 	follows, err := r.state.Caches.DB.FollowRequest.LoadIDs("ID",
 		ids,
 		func(uncached []string) ([]*gtsmodel.FollowRequest, error) {
-			// Avoid querying
-			// if none uncached.
-			count := len(uncached)
-			if count == 0 {
-				return nil, nil
-			}
-
 			// Preallocate expected length of uncached followReqs.
-			follows := make([]*gtsmodel.FollowRequest, 0, count)
+			follows := make([]*gtsmodel.FollowRequest, 0, len(uncached))
 
 			// Perform database query scanning
 			// the remaining (uncached) IDs.
@@ -293,124 +286,131 @@ func (r *relationshipDB) RejectFollowRequest(ctx context.Context, sourceAccountI
 	}, targetAccountID, sourceAccountID)
 }
 
-func (r *relationshipDB) DeleteFollowRequest(ctx context.Context, sourceAccountID string, targetAccountID string) error {
+func (r *relationshipDB) DeleteFollowRequest(
-	// Load followreq into cache before attempting a delete,
+	ctx context.Context,
-	// as we need it cached in order to trigger the invalidate
+	sourceAccountID string,
-	// callback. This in turn invalidates others.
+	targetAccountID string,
-	follow, err := r.GetFollowRequest(
+) error {
-		gtscontext.SetBarebones(ctx),
+
-		sourceAccountID,
+	// Gather necessary fields from
-		targetAccountID,
+	// deleted for cache invaliation.
-	)
+	var deleted gtsmodel.FollowRequest
-	if err != nil {
+	deleted.AccountID = sourceAccountID
-		if errors.Is(err, db.ErrNoEntries) {
+	deleted.TargetAccountID = targetAccountID
-			// Already gone.
+
-			return nil
+	// Delete all follow reqs either
-		}
+	// from account, or targeting account,
+	// returning the deleted models.
+	if _, err := r.db.NewDelete().
+		Model(&deleted).
+		Where("? = ?", bun.Ident("account_id"), sourceAccountID).
+		Where("? = ?", bun.Ident("target_account_id"), targetAccountID).
+		Returning("?", bun.Ident("id")).
+		Exec(ctx); err != nil &&
+		!errors.Is(err, db.ErrNoEntries) {
 		return err
 	}
 
-	// Drop this now-cached follow request on return after delete.
+	// Invalidate cached follow with source / target account IDs,
-	defer r.state.Caches.DB.FollowRequest.Invalidate("AccountID,TargetAccountID", sourceAccountID, targetAccountID)
+	// manually calling invalidate hook in case it isn't cached.
+	r.state.Caches.DB.FollowRequest.Invalidate("AccountID,TargetAccountID",
+		sourceAccountID, targetAccountID)
+	r.state.Caches.OnInvalidateFollowRequest(&deleted)
 
-	// Finally delete followreq from DB.
+	return nil
-	_, err = r.db.NewDelete().
-		Table("follow_requests").
-		Where("? = ?", bun.Ident("id"), follow.ID).
-		Exec(ctx)
-	return err
 }
 
 func (r *relationshipDB) DeleteFollowRequestByID(ctx context.Context, id string) error {
-	// Load followreq into cache before attempting a delete,
+	// Gather necessary fields from
-	// as we need it cached in order to trigger the invalidate
+	// deleted for cache invaliation.
-	// callback. This in turn invalidates others.
+	var deleted gtsmodel.FollowRequest
-	_, err := r.GetFollowRequestByID(gtscontext.SetBarebones(ctx), id)
+	deleted.ID = id
-	if err != nil {
+
-		if errors.Is(err, db.ErrNoEntries) {
+	// Delete follow with given URI,
-			// not an issue.
+	// returning the deleted models.
-			err = nil
+	if _, err := r.db.NewDelete().
-		}
+		Model(&deleted).
+		Where("? = ?", bun.Ident("id"), id).
+		Returning("?, ?",
+			bun.Ident("account_id"),
+			bun.Ident("target_account_id"),
+		).
+		Exec(ctx); err != nil &&
+		!errors.Is(err, db.ErrNoEntries) {
 		return err
 	}
 
-	// Drop this now-cached follow request on return after delete.
+	// Invalidate cached follow with URI, manually
-	defer r.state.Caches.DB.FollowRequest.Invalidate("ID", id)
+	// call invalidate hook in case not cached.
+	r.state.Caches.DB.FollowRequest.Invalidate("ID", id)
+	r.state.Caches.OnInvalidateFollowRequest(&deleted)
 
-	// Finally delete followreq from DB.
+	return nil
-	_, err = r.db.NewDelete().
-		Table("follow_requests").
-		Where("? = ?", bun.Ident("id"), id).
-		Exec(ctx)
-	return err
 }
 
 func (r *relationshipDB) DeleteFollowRequestByURI(ctx context.Context, uri string) error {
-	// Load followreq into cache before attempting a delete,
+	// Gather necessary fields from
-	// as we need it cached in order to trigger the invalidate
+	// deleted for cache invaliation.
-	// callback. This in turn invalidates others.
+	var deleted gtsmodel.FollowRequest
-	_, err := r.GetFollowRequestByURI(gtscontext.SetBarebones(ctx), uri)
+
-	if err != nil {
+	// Delete follow with given URI,
-		if errors.Is(err, db.ErrNoEntries) {
+	// returning the deleted models.
-			// not an issue.
+	if _, err := r.db.NewDelete().
-			err = nil
+		Model(&deleted).
-		}
+		Where("? = ?", bun.Ident("uri"), uri).
+		Returning("?, ?, ?",
+			bun.Ident("id"),
+			bun.Ident("account_id"),
+			bun.Ident("target_account_id"),
+		).
+		Exec(ctx); err != nil &&
+		!errors.Is(err, db.ErrNoEntries) {
 		return err
 	}
 
-	// Drop this now-cached follow request on return after delete.
+	// Invalidate cached follow with URI, manually
-	defer r.state.Caches.DB.FollowRequest.Invalidate("URI", uri)
+	// call invalidate hook in case not cached.
+	r.state.Caches.DB.FollowRequest.Invalidate("URI", uri)
+	r.state.Caches.OnInvalidateFollowRequest(&deleted)
 
-	// Finally delete followreq from DB.
+	return nil
-	_, err = r.db.NewDelete().
-		Table("follow_requests").
-		Where("? = ?", bun.Ident("uri"), uri).
-		Exec(ctx)
-	return err
 }
 
 func (r *relationshipDB) DeleteAccountFollowRequests(ctx context.Context, accountID string) error {
-	var followReqIDs []string
+	// Gather necessary fields from
+	// deleted for cache invaliation.
+	var deleted []*gtsmodel.FollowRequest
 
-	// Get full list of IDs.
+	// Delete all follows either from
-	if _, err := r.db.
+	// account, or targeting account,
-		NewSelect().
+	// returning the deleted models.
-		Column("id").
+	if _, err := r.db.NewDelete().
-		Table("follow_requests").
+		Model(&deleted).
 		WhereOr("? = ? OR ? = ?",
 			bun.Ident("account_id"),
 			accountID,
 			bun.Ident("target_account_id"),
 			accountID,
 		).
-		Exec(ctx, &followReqIDs); err != nil {
+		Returning("?, ?, ?",
+			bun.Ident("id"),
+			bun.Ident("account_id"),
+			bun.Ident("target_account_id"),
+		).
+		Exec(ctx); err != nil &&
+		!errors.Is(err, db.ErrNoEntries) {
 		return err
 	}
 
-	if len(followReqIDs) == 0 {
+	// Invalidate all account's incoming / outoing follows requests.
-		// Nothing
+	r.state.Caches.DB.FollowRequest.Invalidate("AccountID", accountID)
-		// to delete.
+	r.state.Caches.DB.FollowRequest.Invalidate("TargetAccountID", accountID)
-		return nil
+
+	// In case not all follow were in
+	// cache, manually call invalidate hooks.
+	for _, followReq := range deleted {
+		r.state.Caches.OnInvalidateFollowRequest(followReq)
 	}
 
-	defer func() {
+	return nil
-		// Invalidate all account's incoming / outoing follow requests on return.
-		r.state.Caches.DB.FollowRequest.Invalidate("AccountID", accountID)
-		r.state.Caches.DB.FollowRequest.Invalidate("TargetAccountID", accountID)
-	}()
-
-	// Load all followreqs into cache, this *really* isn't
-	// great but it is the only way we can ensure we invalidate
-	// all related caches correctly (e.g. visibility).
-	_, err := r.GetAccountFollowRequests(ctx, accountID, nil)
-	if err != nil && !errors.Is(err, db.ErrNoEntries) {
-		return err
-	}
-
-	// Finally delete all from DB.
-	_, err = r.db.NewDelete().
-		Table("follow_requests").
-		Where("? IN (?)", bun.Ident("id"), bun.In(followReqIDs)).
-		Exec(ctx)
-	return err
 }

internal/db/bundb/relationship_mute.go

@@ -87,15 +87,8 @@ func (r *relationshipDB) getMutesByIDs(ctx context.Context, ids []string) ([]*gt
 	mutes, err := r.state.Caches.DB.UserMute.LoadIDs("ID",
 		ids,
 		func(uncached []string) ([]*gtsmodel.UserMute, error) {
-			// Avoid querying
-			// if none uncached.
-			count := len(uncached)
-			if count == 0 {
-				return nil, nil
-			}
-
 			// Preallocate expected length of uncached mutes.
-			mutes := make([]*gtsmodel.UserMute, 0, count)
+			mutes := make([]*gtsmodel.UserMute, 0, len(uncached))
 
 			// Perform database query scanning
 			// the remaining (uncached) IDs.
@@ -209,72 +202,64 @@ func (r *relationshipDB) PutMute(ctx context.Context, mute *gtsmodel.UserMute) e
 }
 
 func (r *relationshipDB) DeleteMuteByID(ctx context.Context, id string) error {
-	// Load mute into cache before attempting a delete,
+	// Gather necessary fields from
-	// as we need it cached in order to trigger the invalidate
+	// deleted for cache invaliation.
-	// callback. This in turn invalidates others.
+	var deleted gtsmodel.UserMute
-	_, err := r.GetMuteByID(gtscontext.SetBarebones(ctx), id)
+
-	if err != nil {
+	// Delete mute with given ID,
-		if errors.Is(err, db.ErrNoEntries) {
+	// returning the deleted models.
-			// not an issue.
+	if _, err := r.db.NewDelete().
-			err = nil
+		Model(&deleted).
-		}
+		Where("? = ?", bun.Ident("id"), id).
+		Returning("?", bun.Ident("account_id")).
+		Exec(ctx); err != nil &&
+		!errors.Is(err, db.ErrNoEntries) {
 		return err
 	}
 
-	// Drop this now-cached mute on return after delete.
+	// Invalidate cached mute with ID, manually
-	defer r.state.Caches.DB.UserMute.Invalidate("ID", id)
+	// call invalidate hook in case not cached.
+	r.state.Caches.DB.UserMute.Invalidate("ID", id)
+	r.state.Caches.OnInvalidateUserMute(&deleted)
 
-	// Finally delete mute from DB.
+	return nil
-	_, err = r.db.NewDelete().
-		Table("user_mutes").
-		Where("? = ?", bun.Ident("id"), id).
-		Exec(ctx)
-	return err
 }
 
 func (r *relationshipDB) DeleteAccountMutes(ctx context.Context, accountID string) error {
-	var muteIDs []string
+	// Gather necessary fields from
+	// deleted for cache invaliation.
+	var deleted []*gtsmodel.UserMute
 
-	// Get full list of IDs.
+	// Delete all mutes either from
-	if err := r.db.NewSelect().
+	// account, or targeting account,
-		Column("id").
+	// returning the deleted models.
-		Table("user_mutes").
+	if _, err := r.db.NewDelete().
+		Model(&deleted).
 		WhereOr("? = ? OR ? = ?",
 			bun.Ident("account_id"),
 			accountID,
 			bun.Ident("target_account_id"),
 			accountID,
 		).
-		Scan(ctx, &muteIDs); err != nil {
+		Returning("?",
+			bun.Ident("account_id"),
+		).
+		Exec(ctx); err != nil &&
+		!errors.Is(err, db.ErrNoEntries) {
 		return err
 	}
 
-	if len(muteIDs) == 0 {
+	// Invalidate all account's incoming / outoing user mutes.
-		// Nothing
+	r.state.Caches.DB.UserMute.Invalidate("AccountID", accountID)
-		// to delete.
+	r.state.Caches.DB.UserMute.Invalidate("TargetAccountID", accountID)
-		return nil
+
+	// In case not all user mutes were in
+	// cache, manually call invalidate hooks.
+	for _, block := range deleted {
+		r.state.Caches.OnInvalidateUserMute(block)
 	}
 
-	defer func() {
+	return nil
-		// Invalidate all account's incoming / outoing mutes on return.
-		r.state.Caches.DB.UserMute.Invalidate("AccountID", accountID)
-		r.state.Caches.DB.UserMute.Invalidate("TargetAccountID", accountID)
-	}()
-
-	// Load all mutes into cache, this *really* isn't great
-	// but it is the only way we can ensure we invalidate all
-	// related caches correctly (e.g. visibility).
-	_, err := r.GetAccountMutes(ctx, accountID, nil)
-	if err != nil && !errors.Is(err, db.ErrNoEntries) {
-		return err
-	}
-
-	// Finally delete all from DB.
-	_, err = r.db.NewDelete().
-		Table("user_mutes").
-		Where("? IN (?)", bun.Ident("id"), bun.In(muteIDs)).
-		Exec(ctx)
-	return err
 }
 
 func (r *relationshipDB) GetAccountMutes(

internal/db/bundb/relationship_test.go

@@ -826,10 +826,10 @@ func (suite *RelationshipTestSuite) TestUnfollowExisting() {
 	suite.NotNil(follow)
 	followID := follow.ID
 
-	// We should have list entries for this follow.
+	// We should have lists that this follow is a part of.
-	listEntries, err := suite.db.GetListEntriesForFollowID(context.Background(), followID)
+	lists, err := suite.db.GetListsContainingFollowID(context.Background(), followID)
 	suite.NoError(err)
-	suite.NotEmpty(listEntries)
+	suite.NotEmpty(lists)
 
 	err = suite.db.DeleteFollowByID(context.Background(), followID)
 	suite.NoError(err)
@@ -838,10 +838,10 @@ func (suite *RelationshipTestSuite) TestUnfollowExisting() {
 	suite.EqualError(err, db.ErrNoEntries.Error())
 	suite.Nil(follow)
 
-	// ListEntries pertaining to this follow should be deleted too.
+	// Lists containing this follow should return empty too.
-	listEntries, err = suite.db.GetListEntriesForFollowID(context.Background(), followID)
+	lists, err = suite.db.GetListsContainingFollowID(context.Background(), followID)
 	suite.NoError(err)
-	suite.Empty(listEntries)
+	suite.Empty(lists)
 }
 
 func (suite *RelationshipTestSuite) TestGetFollowNotExisting() {

internal/db/bundb/report.go

@@ -248,45 +248,36 @@ func (r *reportDB) PutReport(ctx context.Context, report *gtsmodel.Report) error
 	})
 }
 
-func (r *reportDB) UpdateReport(ctx context.Context, report *gtsmodel.Report, columns ...string) (*gtsmodel.Report, error) {
+func (r *reportDB) UpdateReport(ctx context.Context, report *gtsmodel.Report, columns ...string) error {
 	// Update the report's last-updated
 	report.UpdatedAt = time.Now()
 	if len(columns) != 0 {
 		columns = append(columns, "updated_at")
 	}
 
-	if _, err := r.db.
+	return r.state.Caches.DB.Report.Store(report, func() error {
-		NewUpdate().
+		_, err := r.db.
-		Model(report).
+			NewUpdate().
-		Where("? = ?", bun.Ident("report.id"), report.ID).
+			Model(report).
-		Column(columns...).
+			Where("? = ?", bun.Ident("report.id"), report.ID).
-		Exec(ctx); err != nil {
+			Column(columns...).
-		return nil, err
+			Exec(ctx)
-	}
+		return err
-
+	})
-	r.state.Caches.DB.Report.Invalidate("ID", report.ID)
-	return report, nil
 }
 
 func (r *reportDB) DeleteReportByID(ctx context.Context, id string) error {
-	defer r.state.Caches.DB.Report.Invalidate("ID", id)
+	// Delete the report from DB.
-
+	if _, err := r.db.NewDelete().
-	// Load status into cache before attempting a delete,
+		TableExpr("? AS ?", bun.Ident("reports"), bun.Ident("report")).
-	// as we need it cached in order to trigger the invalidate
+		Where("? = ?", bun.Ident("report.id"), id).
-	// callback. This in turn invalidates others.
+		Exec(ctx); err != nil &&
-	_, err := r.GetReportByID(gtscontext.SetBarebones(ctx), id)
+		!errors.Is(err, db.ErrNoEntries) {
-	if err != nil {
-		if errors.Is(err, db.ErrNoEntries) {
-			// not an issue.
-			err = nil
-		}
 		return err
 	}
 
-	// Finally delete report from DB.
+	// Invalidate any cached report model by ID.
-	_, err = r.db.NewDelete().
+	r.state.Caches.DB.Report.Invalidate("ID", id)
-		TableExpr("? AS ?", bun.Ident("reports"), bun.Ident("report")).
+
-		Where("? = ?", bun.Ident("report.id"), id).
+	return nil
-		Exec(ctx)
-	return err
 }

internal/db/bundb/report_test.go

@@ -202,7 +202,7 @@ func (suite *ReportTestSuite) TestUpdateReport() {
 	report.ActionTakenByAccountID = suite.testAccounts["admin_account"].ID
 	report.ActionTakenAt = testrig.TimeMustParse("2022-05-14T12:20:03+02:00")
 
-	if _, err := suite.db.UpdateReport(ctx, report, "action_taken", "action_taken_by_account_id", "action_taken_at"); err != nil {
+	if err := suite.db.UpdateReport(ctx, report, "action_taken", "action_taken_by_account_id", "action_taken_at"); err != nil {
 		suite.FailNow(err.Error())
 	}
 
@@ -228,7 +228,7 @@ func (suite *ReportTestSuite) TestUpdateReportAllColumns() {
 	report.ActionTakenByAccountID = suite.testAccounts["admin_account"].ID
 	report.ActionTakenAt = testrig.TimeMustParse("2022-05-14T12:20:03+02:00")
 
-	if _, err := suite.db.UpdateReport(ctx, report); err != nil {
+	if err := suite.db.UpdateReport(ctx, report); err != nil {
 		suite.FailNow(err.Error())
 	}
 

internal/db/bundb/sinbinstatus.go

@@ -19,8 +19,10 @@ package bundb
 
 import (
 	"context"
+	"errors"
 	"time"
 
+	"github.com/superseriousbusiness/gotosocial/internal/db"
 	"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
 	"github.com/superseriousbusiness/gotosocial/internal/state"
 	"github.com/uptrace/bun"
@@ -110,13 +112,18 @@ func (s *sinBinStatusDB) UpdateSinBinStatus(
 }
 
 func (s *sinBinStatusDB) DeleteSinBinStatusByID(ctx context.Context, id string) error {
-	// On return ensure status invalidated from cache.
+	// Delete the status from DB.
-	defer s.state.Caches.DB.SinBinStatus.Invalidate("ID", id)
+	if _, err := s.db.
-
-	_, err := s.db.
 		NewDelete().
 		TableExpr("? AS ?", bun.Ident("sin_bin_statuses"), bun.Ident("sin_bin_status")).
 		Where("? = ?", bun.Ident("sin_bin_status.id"), id).
-		Exec(ctx)
+		Exec(ctx); err != nil &&
-	return err
+		!errors.Is(err, db.ErrNoEntries) {
+		return err
+	}
+
+	// Invalidate any cached sinbin status model by ID.
+	s.state.Caches.DB.SinBinStatus.Invalidate("ID", id)
+
+	return nil
 }

internal/db/bundb/status.go

@@ -54,15 +54,8 @@ func (s *statusDB) GetStatusesByIDs(ctx context.Context, ids []string) ([]*gtsmo
 	statuses, err := s.state.Caches.DB.Status.LoadIDs("ID",
 		ids,
 		func(uncached []string) ([]*gtsmodel.Status, error) {
-			// Avoid querying
-			// if none uncached.
-			count := len(uncached)
-			if count == 0 {
-				return nil, nil
-			}
-
 			// Preallocate expected length of uncached statuses.
-			statuses := make([]*gtsmodel.Status, 0, count)
+			statuses := make([]*gtsmodel.Status, 0, len(uncached))
 
 			// Perform database query scanning
 			// the remaining (uncached) status IDs.
@@ -486,24 +479,13 @@ func (s *statusDB) UpdateStatus(ctx context.Context, status *gtsmodel.Status, co
 }
 
 func (s *statusDB) DeleteStatusByID(ctx context.Context, id string) error {
-	// Load status into cache before attempting a delete,
+	// Gather necessary fields from
-	// as we need it cached in order to trigger the invalidate
+	// deleted for cache invaliation.
-	// callback. This in turn invalidates others.
+	var deleted gtsmodel.Status
-	_, err := s.GetStatusByID(
+	deleted.ID = id
-		gtscontext.SetBarebones(ctx),
-		id,
-	)
-	if err != nil && !errors.Is(err, db.ErrNoEntries) {
-		// NOTE: even if db.ErrNoEntries is returned, we
-		// still run the below transaction to ensure related
-		// objects are appropriately deleted.
-		return err
-	}
 
-	// On return ensure status invalidated from cache.
+	// Delete status from database and any related links in a transaction.
-	defer s.state.Caches.DB.Status.Invalidate("ID", id)
+	if err := s.db.RunInTx(ctx, nil, func(ctx context.Context, tx bun.Tx) error {
-
-	return s.db.RunInTx(ctx, nil, func(ctx context.Context, tx bun.Tx) error {
 		// delete links between this status and any emojis it uses
 		if _, err := tx.
 			NewDelete().
@@ -524,26 +506,42 @@ func (s *statusDB) DeleteStatusByID(ctx context.Context, id string) error {
 
 		// Delete links between this status
 		// and any threads it was a part of.
-		_, err = tx.
+		if _, err := tx.
 			NewDelete().
 			TableExpr("? AS ?", bun.Ident("thread_to_statuses"), bun.Ident("thread_to_status")).
 			Where("? = ?", bun.Ident("thread_to_status.status_id"), id).
-			Exec(ctx)
+			Exec(ctx); err != nil {
-		if err != nil {
 			return err
 		}
 
 		// delete the status itself
 		if _, err := tx.
 			NewDelete().
-			TableExpr("? AS ?", bun.Ident("statuses"), bun.Ident("status")).
+			Model(&deleted).
-			Where("? = ?", bun.Ident("status.id"), id).
+			Where("? = ?", bun.Ident("id"), id).
-			Exec(ctx); err != nil {
+			Returning("?, ?, ?, ?, ?",
+				bun.Ident("account_id"),
+				bun.Ident("boost_of_id"),
+				bun.Ident("in_reply_to_id"),
+				bun.Ident("attachments"),
+				bun.Ident("poll_id"),
+			).
+			Exec(ctx); err != nil &&
+			!errors.Is(err, db.ErrNoEntries) {
 			return err
 		}
 
 		return nil
-	})
+	}); err != nil {
+		return err
+	}
+
+	// Invalidate cached status by its ID, manually
+	// call the invalidate hook in case not cached.
+	s.state.Caches.DB.Status.Invalidate("ID", id)
+	s.state.Caches.OnInvalidateStatus(&deleted)
+
+	return nil
 }
 
 func (s *statusDB) GetStatusesUsingEmoji(ctx context.Context, emojiID string) ([]*gtsmodel.Status, error) {

internal/db/bundb/statusbookmark.go

@@ -73,15 +73,8 @@ func (s *statusBookmarkDB) GetStatusBookmarksByIDs(ctx context.Context, ids []st
 	bookmarks, err := s.state.Caches.DB.StatusBookmark.LoadIDs("ID",
 		ids,
 		func(uncached []string) ([]*gtsmodel.StatusBookmark, error) {
-			// Avoid querying
-			// if none uncached.
-			count := len(uncached)
-			if count == 0 {
-				return nil, nil
-			}
-
 			// Preallocate expected length of uncached bookmarks.
-			bookmarks := make([]*gtsmodel.StatusBookmark, 0, count)
+			bookmarks := make([]*gtsmodel.StatusBookmark, 0, len(uncached))
 
 			// Perform database query scanning
 			// the remaining (uncached) bookmarks.
@@ -264,60 +257,86 @@ func (s *statusBookmarkDB) PutStatusBookmark(ctx context.Context, bookmark *gtsm
 }
 
 func (s *statusBookmarkDB) DeleteStatusBookmarkByID(ctx context.Context, id string) error {
-	_, err := s.db.
+	// Gather necessary fields from
-		NewDelete().
+	// deleted for cache invaliation.
-		Table("status_bookmarks").
+	var deleted gtsmodel.StatusBookmark
+	deleted.ID = id
+
+	// Delete block with given URI,
+	// returning the deleted models.
+	if _, err := s.db.NewDelete().
+		Model(&deleted).
 		Where("? = ?", bun.Ident("id"), id).
-		Exec(ctx)
+		Returning("?", bun.Ident("status_id")).
-	if err != nil {
+		Exec(ctx); err != nil &&
+		!errors.Is(err, db.ErrNoEntries) {
 		return err
 	}
+
+	// Invalidate cached status bookmark by its ID,
+	// manually call invalidate hook in case not cached.
 	s.state.Caches.DB.StatusBookmark.Invalidate("ID", id)
+	s.state.Caches.OnInvalidateStatusBookmark(&deleted)
+
 	return nil
 }
 
 func (s *statusBookmarkDB) DeleteStatusBookmarks(ctx context.Context, targetAccountID string, originAccountID string) error {
 	if targetAccountID == "" && originAccountID == "" {
-		return errors.New("DeleteBookmarks: one of targetAccountID or originAccountID must be set")
+		return gtserror.New("one of targetAccountID or originAccountID must be set")
 	}
 
+	// Gather necessary fields from
+	// deleted for cache invaliation.
+	var deleted []*gtsmodel.StatusBookmark
+
 	q := s.db.
 		NewDelete().
-		TableExpr("? AS ?", bun.Ident("status_bookmarks"), bun.Ident("status_bookmark"))
+		Model(&deleted).
+		Returning("?", bun.Ident("status_id"))
 
 	if targetAccountID != "" {
-		q = q.Where("? = ?", bun.Ident("status_bookmark.target_account_id"), targetAccountID)
+		q = q.Where("? = ?", bun.Ident("target_account_id"), targetAccountID)
-		defer s.state.Caches.DB.StatusBookmark.Invalidate("TargetAccountID", targetAccountID)
 	}
 
 	if originAccountID != "" {
-		q = q.Where("? = ?", bun.Ident("status_bookmark.account_id"), originAccountID)
+		q = q.Where("? = ?", bun.Ident("account_id"), originAccountID)
-		defer s.state.Caches.DB.StatusBookmark.Invalidate("AccountID", originAccountID)
 	}
 
-	if _, err := q.Exec(ctx); err != nil {
+	if _, err := q.Exec(ctx); err != nil &&
+		!errors.Is(err, db.ErrNoEntries) {
 		return err
 	}
 
-	if targetAccountID != "" {
+	for _, deleted := range deleted {
-		s.state.Caches.DB.StatusBookmark.Invalidate("TargetAccountID", targetAccountID)
+		// Invalidate cached status bookmark by status ID,
-	}
+		// manually call invalidate hook in case not cached.
-
+		s.state.Caches.DB.StatusBookmark.Invalidate("StatusID", deleted.StatusID)
-	if originAccountID != "" {
+		s.state.Caches.OnInvalidateStatusBookmark(deleted)
-		s.state.Caches.DB.StatusBookmark.Invalidate("AccountID", originAccountID)
 	}
 
 	return nil
 }
 
 func (s *statusBookmarkDB) DeleteStatusBookmarksForStatus(ctx context.Context, statusID string) error {
-	q := s.db.
+	// Delete status bookmarks
-		NewDelete().
+	// from database by status ID.
+	q := s.db.NewDelete().
 		TableExpr("? AS ?", bun.Ident("status_bookmarks"), bun.Ident("status_bookmark")).
 		Where("? = ?", bun.Ident("status_bookmark.status_id"), statusID)
 	if _, err := q.Exec(ctx); err != nil {
 		return err
 	}
+
+	// Wrap provided ID in a bookmark
+	// model for calling cache hook.
+	var deleted gtsmodel.StatusBookmark
+	deleted.StatusID = statusID
+
+	// Invalidate cached status bookmark by status ID,
+	// manually call invalidate hook in case not cached.
 	s.state.Caches.DB.StatusBookmark.Invalidate("StatusID", statusID)
+	s.state.Caches.OnInvalidateStatusBookmark(&deleted)
+
 	return nil
 }

internal/db/bundb/statusfave.go

@@ -133,15 +133,8 @@ func (s *statusFaveDB) GetStatusFaves(ctx context.Context, statusID string) ([]*
 	faves, err := s.state.Caches.DB.StatusFave.LoadIDs("ID",
 		faveIDs,
 		func(uncached []string) ([]*gtsmodel.StatusFave, error) {
-			// Avoid querying
-			// if none uncached.
-			count := len(uncached)
-			if count == 0 {
-				return nil, nil
-			}
-
 			// Preallocate expected length of uncached faves.
-			faves := make([]*gtsmodel.StatusFave, 0, count)
+			faves := make([]*gtsmodel.StatusFave, 0, len(uncached))
 
 			// Perform database query scanning
 			// the remaining (uncached) fave IDs.

internal/db/bundb/tag.go

@@ -20,6 +20,7 @@ package bundb
 import (
 	"context"
 	"errors"
+	"slices"
 	"strings"
 
 	"github.com/superseriousbusiness/gotosocial/internal/db"
@@ -79,15 +80,8 @@ func (t *tagDB) GetTags(ctx context.Context, ids []string) ([]*gtsmodel.Tag, err
 	tags, err := t.state.Caches.DB.Tag.LoadIDs("ID",
 		ids,
 		func(uncached []string) ([]*gtsmodel.Tag, error) {
-			// Avoid querying
-			// if none uncached.
-			count := len(uncached)
-			if count == 0 {
-				return nil, nil
-			}
-
 			// Preallocate expected length of uncached tags.
-			tags := make([]*gtsmodel.Tag, 0, count)
+			tags := make([]*gtsmodel.Tag, 0, len(uncached))
 
 			// Perform database query scanning
 			// the remaining (uncached) IDs.
@@ -148,17 +142,11 @@ func (t *tagDB) GetFollowedTags(ctx context.Context, accountID string, page *pag
 	if err != nil {
 		return nil, err
 	}
-
+	return t.GetTags(ctx, tagIDs)
-	tags, err := t.GetTags(ctx, tagIDs)
-	if err != nil {
-		return nil, err
-	}
-
-	return tags, nil
 }
 
 func (t *tagDB) getTagIDsFollowedByAccount(ctx context.Context, accountID string, page *paging.Page) ([]string, error) {
-	return loadPagedIDs(&t.state.Caches.DB.TagIDsFollowedByAccount, accountID, page, func() ([]string, error) {
+	return loadPagedIDs(&t.state.Caches.DB.FollowingTagIDs, ">"+accountID, page, func() ([]string, error) {
 		var tagIDs []string
 
 		// Tag IDs not in cache. Perform DB query.
@@ -178,7 +166,7 @@ func (t *tagDB) getTagIDsFollowedByAccount(ctx context.Context, accountID string
 }
 
 func (t *tagDB) getAccountIDsFollowingTag(ctx context.Context, tagID string) ([]string, error) {
-	return loadPagedIDs(&t.state.Caches.DB.AccountIDsFollowingTag, tagID, nil, func() ([]string, error) {
+	return loadPagedIDs(&t.state.Caches.DB.FollowingTagIDs, "<"+tagID, nil, func() ([]string, error) {
 		var accountIDs []string
 
 		// Account IDs not in cache. Perform DB query.
@@ -198,18 +186,11 @@ func (t *tagDB) getAccountIDsFollowingTag(ctx context.Context, tagID string) ([]
 }
 
 func (t *tagDB) IsAccountFollowingTag(ctx context.Context, accountID string, tagID string) (bool, error) {
-	accountTagIDs, err := t.getTagIDsFollowedByAccount(ctx, accountID, nil)
+	followingTagIDs, err := t.getTagIDsFollowedByAccount(ctx, accountID, nil)
 	if err != nil {
 		return false, err
 	}
-
+	return slices.Contains(followingTagIDs, tagID), nil
-	for _, accountTagID := range accountTagIDs {
-		if accountTagID == tagID {
-			return true, nil
-		}
-	}
-
-	return false, nil
 }
 
 func (t *tagDB) PutFollowedTag(ctx context.Context, accountID string, tagID string) error {
@@ -234,9 +215,15 @@ func (t *tagDB) PutFollowedTag(ctx context.Context, accountID string, tagID stri
 		return nil
 	}
 
-	// Otherwise, this is a new followed tag, so we invalidate caches related to it.
+	// We updated something, invalidate caches.
-	t.state.Caches.DB.AccountIDsFollowingTag.Invalidate(tagID)
+	t.state.Caches.DB.FollowingTagIDs.Invalidate(
-	t.state.Caches.DB.TagIDsFollowedByAccount.Invalidate(accountID)
+
+		// tag IDs followed by account
+		">"+accountID,
+
+		// account IDs following tag
+		"<"+tagID,
+	)
 
 	return nil
 }
@@ -259,9 +246,15 @@ func (t *tagDB) DeleteFollowedTag(ctx context.Context, accountID string, tagID s
 		return nil
 	}
 
-	// If we deleted anything, invalidate caches related to it.
+	// We deleted something, invalidate caches.
-	t.state.Caches.DB.AccountIDsFollowingTag.Invalidate(tagID)
+	t.state.Caches.DB.FollowingTagIDs.Invalidate(
-	t.state.Caches.DB.TagIDsFollowedByAccount.Invalidate(accountID)
+
+		// tag IDs followed by account
+		">"+accountID,
+
+		// account IDs following tag
+		"<"+tagID,
+	)
 
 	return err
 }
@@ -278,16 +271,26 @@ func (t *tagDB) DeleteFollowedTagsByAccountID(ctx context.Context, accountID str
 		return gtserror.Newf("error deleting followed tags for account %s: %w", accountID, err)
 	}
 
-	// Invalidate account ID caches for the account and those tags.
+	// Convert tag IDs to the keys
-	t.state.Caches.DB.TagIDsFollowedByAccount.Invalidate(accountID)
+	// we use for caching tag follow
-	t.state.Caches.DB.AccountIDsFollowingTag.Invalidate(tagIDs...)
+	// and following IDs.
+	keys := tagIDs
+	for i := range keys {
+		keys[i] = "<" + keys[i]
+	}
+	keys = append(keys, ">"+accountID)
+
+	// If we deleted anything, invalidate caches with keys.
+	t.state.Caches.DB.FollowingTagIDs.Invalidate(keys...)
 
 	return nil
 }
 
 func (t *tagDB) GetAccountIDsFollowingTagIDs(ctx context.Context, tagIDs []string) ([]string, error) {
-	// Accounts might be following multiple tags in this list, but we only want to return each account once.
+	// Make conservative estimate for no. accounts.
-	accountIDs := []string{}
+	accountIDs := make([]string, 0, len(tagIDs))
+
+	// Gather all accounts following tags.
 	for _, tagID := range tagIDs {
 		tagAccountIDs, err := t.getAccountIDsFollowingTag(ctx, tagID)
 		if err != nil {
@@ -295,5 +298,8 @@ func (t *tagDB) GetAccountIDsFollowingTagIDs(ctx context.Context, tagIDs []strin
 		}
 		accountIDs = append(accountIDs, tagAccountIDs...)
 	}
+
+	// Accounts might be following multiple tags in list,
+	// but we only want to return each account once.
 	return util.Deduplicate(accountIDs), nil
 }

internal/db/bundb/timeline.go

@@ -70,7 +70,7 @@ func (t *timelineDB) GetHomeTimeline(ctx context.Context, accountID string, maxI
 	// To take account of exclusive lists, get all of
 	// this account's lists, so we can filter out follows
 	// that are in contained in exclusive lists.
-	lists, err := t.state.DB.GetListsForAccountID(ctx, accountID)
+	lists, err := t.state.DB.GetListsByAccountID(ctx, accountID)
 	if err != nil && !errors.Is(err, db.ErrNoEntries) {
 		return nil, gtserror.Newf("db error getting lists for account %s: %w", accountID, err)
 	}
@@ -84,9 +84,15 @@ func (t *timelineDB) GetHomeTimeline(ctx context.Context, accountID string, maxI
 			continue
 		}
 
+		// Fetch all follow IDs of the entries ccontained in this list.
+		listFollowIDs, err := t.state.DB.GetFollowIDsInList(ctx, list.ID, nil)
+		if err != nil && !errors.Is(err, db.ErrNoEntries) {
+			return nil, gtserror.Newf("db error getting list entry follow ids: %w", err)
+		}
+
 		// Exclusive list, index all its follow IDs.
-		for _, listEntry := range list.ListEntries {
+		for _, followID := range listFollowIDs {
-			ignoreFollowIDs[listEntry.FollowID] = struct{}{}
+			ignoreFollowIDs[followID] = struct{}{}
 		}
 	}
 
@@ -370,30 +376,20 @@ func (t *timelineDB) GetListTimeline(
 		frontToBack = true
 	)
 
-	// Fetch all listEntries entries from the database.
+	// Fetch all follow IDs contained in list from DB.
-	listEntries, err := t.state.DB.GetListEntries(
+	followIDs, err := t.state.DB.GetFollowIDsInList(
-		// Don't need actual follows
+		ctx, listID, nil,
-		// for this, just the IDs.
-		gtscontext.SetBarebones(ctx),
-		listID,
-		"", "", "", 0,
 	)
 	if err != nil {
-		return nil, fmt.Errorf("error getting entries for list %s: %w", listID, err)
+		return nil, fmt.Errorf("error getting follows in list: %w", err)
 	}
 
-	// If there's no list entries we can't
+	// If there's no list follows we can't
 	// possibly return anything for this list.
-	if len(listEntries) == 0 {
+	if len(followIDs) == 0 {
 		return make([]*gtsmodel.Status, 0), nil
 	}
 
-	// Extract just the IDs of each follow.
-	followIDs := make([]string, 0, len(listEntries))
-	for _, listEntry := range listEntries {
-		followIDs = append(followIDs, listEntry.FollowID)
-	}
-
 	// Select target account IDs from follows.
 	subQ := t.db.
 		NewSelect().

internal/db/bundb/timeline_test.go

@@ -184,8 +184,8 @@ func (suite *TimelineTestSuite) TestGetHomeTimelineIgnoreExclusive() {
 	suite.checkStatuses(s, id.Highest, id.Lowest, 8)
 
 	// Remove admin account from the exclusive list.
-	listEntryID := suite.testListEntries["local_account_1_list_1_entry_2"].ID
+	listEntry := suite.testListEntries["local_account_1_list_1_entry_2"]
-	if err := suite.db.DeleteListEntry(ctx, listEntryID); err != nil {
+	if err := suite.db.DeleteListEntry(ctx, listEntry.ListID, listEntry.FollowID); err != nil {
 		suite.FailNow(err.Error())
 	}
 

internal/db/bundb/tombstone.go

@@ -67,12 +67,14 @@ func (t *tombstoneDB) PutTombstone(ctx context.Context, tombstone *gtsmodel.Tomb
 }
 
 func (t *tombstoneDB) DeleteTombstone(ctx context.Context, id string) error {
-	defer t.state.Caches.DB.Tombstone.Invalidate("ID", id)
-
 	// Delete tombstone from DB.
 	_, err := t.db.NewDelete().
 		TableExpr("? AS ?", bun.Ident("tombstones"), bun.Ident("tombstone")).
 		Where("? = ?", bun.Ident("tombstone.id"), id).
 		Exec(ctx)
+
+	// Invalidate any cached tombstone by given ID.
+	t.state.Caches.DB.Tombstone.Invalidate("ID", id)
+
 	return err
 }

internal/db/bundb/user.go

@@ -19,10 +19,8 @@ package bundb
 
 import (
 	"context"
-	"errors"
 	"time"
 
-	"github.com/superseriousbusiness/gotosocial/internal/db"
 	"github.com/superseriousbusiness/gotosocial/internal/gtscontext"
 	"github.com/superseriousbusiness/gotosocial/internal/gtserror"
 	"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
@@ -209,26 +207,26 @@ func (u *userDB) UpdateUser(ctx context.Context, user *gtsmodel.User, columns ..
 }
 
 func (u *userDB) DeleteUserByID(ctx context.Context, userID string) error {
-	defer u.state.Caches.DB.User.Invalidate("ID", userID)
+	// Gather necessary fields from
+	// deleted for cache invaliation.
+	var deleted gtsmodel.User
+	deleted.ID = userID
 
-	// Load user into cache before attempting a delete,
+	// Delete user from DB.
-	// as we need it cached in order to trigger the invalidate
+	if _, err := u.db.NewDelete().
-	// callback. This in turn invalidates others.
+		Model(&deleted).
-	_, err := u.GetUserByID(gtscontext.SetBarebones(ctx), userID)
+		Where("? = ?", bun.Ident("id"), userID).
-	if err != nil {
+		Returning("?", bun.Ident("account_id")).
-		if errors.Is(err, db.ErrNoEntries) {
+		Exec(ctx); err != nil {
-			// not an issue.
-			err = nil
-		}
 		return err
 	}
 
-	// Finally delete user from DB.
+	// Invalidate cached user by ID, manually
-	_, err = u.db.NewDelete().
+	// call invalidate hook in case not cached.
-		TableExpr("? AS ?", bun.Ident("users"), bun.Ident("user")).
+	u.state.Caches.DB.User.Invalidate("ID", userID)
-		Where("? = ?", bun.Ident("user.id"), userID).
+	u.state.Caches.OnInvalidateUser(&deleted)
-		Exec(ctx)
+
-	return err
+	return nil
 }
 
 func (u *userDB) PutDeniedUser(ctx context.Context, deniedUser *gtsmodel.DeniedUser) error {

internal/db/list.go

@@ -21,6 +21,7 @@ import (
 	"context"
 
 	"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
+	"github.com/superseriousbusiness/gotosocial/internal/paging"
 )
 
 type List interface {
@@ -30,11 +31,29 @@ type List interface {
 	// GetListsByIDs fetches all lists with the provided IDs.
 	GetListsByIDs(ctx context.Context, ids []string) ([]*gtsmodel.List, error)
 
-	// GetListsForAccountID gets all lists owned by the given accountID.
+	// GetListsByAccountID gets all lists owned by the given accountID.
-	GetListsForAccountID(ctx context.Context, accountID string) ([]*gtsmodel.List, error)
+	GetListsByAccountID(ctx context.Context, accountID string) ([]*gtsmodel.List, error)
 
-	// CountListsForAccountID counts the number of lists owned by the given accountID.
+	// CountListsByAccountID counts the number of lists owned by the given accountID.
-	CountListsForAccountID(ctx context.Context, accountID string) (int, error)
+	CountListsByAccountID(ctx context.Context, accountID string) (int, error)
+
+	// GetListsContainingFollowID gets all lists that contain the given follow with ID.
+	GetListsContainingFollowID(ctx context.Context, followID string) ([]*gtsmodel.List, error)
+
+	// GetFollowIDsInList returns all the follow IDs contained within given list ID.
+	GetFollowIDsInList(ctx context.Context, listID string, page *paging.Page) ([]string, error)
+
+	// GetFollowsInList returns all the follows contained within given list ID.
+	GetFollowsInList(ctx context.Context, listID string, page *paging.Page) ([]*gtsmodel.Follow, error)
+
+	// GetAccountIDsInList return all the account IDs (follow targets) contained within given list ID.
+	GetAccountIDsInList(ctx context.Context, listID string, page *paging.Page) ([]string, error)
+
+	// GetAccountsInList return all the accounts (follow targets) contained within given list ID.
+	GetAccountsInList(ctx context.Context, listID string, page *paging.Page) ([]*gtsmodel.Account, error)
+
+	// IsAccountInListID returns whether given account with ID is in the list with ID.
+	IsAccountInList(ctx context.Context, listID string, accountID string) (bool, error)
 
 	// PopulateList ensures that the list's struct fields are populated.
 	PopulateList(ctx context.Context, list *gtsmodel.List) error
@@ -49,31 +68,13 @@ type List interface {
 	// DeleteListByID deletes one list with the given ID.
 	DeleteListByID(ctx context.Context, id string) error
 
-	// GetListEntryByID gets one list entry with the given ID.
-	GetListEntryByID(ctx context.Context, id string) (*gtsmodel.ListEntry, error)
-
-	// GetListEntriesyIDs fetches all list entries with the provided IDs.
-	GetListEntriesByIDs(ctx context.Context, ids []string) ([]*gtsmodel.ListEntry, error)
-
-	// GetListEntries gets list entries from the given listID, using the given parameters.
-	GetListEntries(ctx context.Context, listID string, maxID string, sinceID string, minID string, limit int) ([]*gtsmodel.ListEntry, error)
-
-	// GetListEntriesForFollowID returns all listEntries that pertain to the given followID.
-	GetListEntriesForFollowID(ctx context.Context, followID string) ([]*gtsmodel.ListEntry, error)
-
-	// PopulateListEntry ensures that the listEntry's struct fields are populated.
-	PopulateListEntry(ctx context.Context, listEntry *gtsmodel.ListEntry) error
-
 	// PutListEntries inserts a slice of listEntries into the database.
 	// It uses a transaction to ensure no partial updates.
 	PutListEntries(ctx context.Context, listEntries []*gtsmodel.ListEntry) error
 
-	// DeleteListEntry deletes one list entry with the given id.
+	// DeleteListEntry deletes the list entry with given list ID and follow ID.
-	DeleteListEntry(ctx context.Context, id string) error
+	DeleteListEntry(ctx context.Context, listID string, followID string) error
 
-	// DeleteListEntryForFollowID deletes all list entries with the given followID.
+	// DeleteAllListEntryByFollow deletes all list entries with the given followIDs.
-	DeleteListEntriesForFollowID(ctx context.Context, followID string) error
+	DeleteAllListEntriesByFollows(ctx context.Context, followIDs ...string) error
-
-	// ListIncludesAccount returns true if the given listID includes the given accountID.
-	ListIncludesAccount(ctx context.Context, listID string, accountID string) (bool, error)
 }

internal/db/poll.go

@@ -39,7 +39,8 @@ type Poll interface {
 	// UpdatePoll updates the Poll in the database, only on selected columns if provided (else, all).
 	UpdatePoll(ctx context.Context, poll *gtsmodel.Poll, cols ...string) error
 
-	// DeletePollByID deletes the Poll with given ID from the database.
+	// DeletePollByID deletes the Poll with given ID from the
+	// database, along with all its associated poll votes.
 	DeletePollByID(ctx context.Context, id string) error
 
 	// GetPollVoteByID gets the PollVote with given ID from the database.
@@ -57,9 +58,6 @@ type Poll interface {
 	// PutPollVote puts the given PollVote in the database.
 	PutPollVote(ctx context.Context, vote *gtsmodel.PollVote) error
 
-	// DeletePollVotes deletes all PollVotes in Poll with given ID from the database.
-	DeletePollVotes(ctx context.Context, pollID string) error
-
 	// DeletePollVoteBy deletes the PollVote in Poll with ID, by account ID, from the database.
 	DeletePollVoteBy(ctx context.Context, pollID string, accountID string) error
 

internal/db/relationship.go

@@ -68,6 +68,9 @@ type Relationship interface {
 	// GetFollow retrieves a follow if it exists between source and target accounts.
 	GetFollow(ctx context.Context, sourceAccountID string, targetAccountID string) (*gtsmodel.Follow, error)
 
+	// GetFollowsByIDs fetches all follows from database with given IDs.
+	GetFollowsByIDs(ctx context.Context, ids []string) ([]*gtsmodel.Follow, error)
+
 	// PopulateFollow populates the struct pointers on the given follow.
 	PopulateFollow(ctx context.Context, follow *gtsmodel.Follow) error
 

internal/db/report.go

@@ -44,7 +44,7 @@ type Report interface {
 	// provided, then all columns will be updated.
 	// updated_at will also be updated, no need to pass this
 	// as a specific column.
-	UpdateReport(ctx context.Context, report *gtsmodel.Report, columns ...string) (*gtsmodel.Report, error)
+	UpdateReport(ctx context.Context, report *gtsmodel.Report, columns ...string) error
 
 	// DeleteReportByID deletes report with the given id.
 	DeleteReportByID(ctx context.Context, id string) error

internal/federation/dereferencing/status.go

@@ -826,9 +826,6 @@ func (d *Dereferencer) fetchStatusPoll(
 			if err := d.state.DB.DeletePollByID(ctx, pollID); err != nil {
 				return gtserror.Newf("error deleting existing poll from database: %w", err)
 			}
-			if err := d.state.DB.DeletePollVotes(ctx, pollID); err != nil {
-				return gtserror.Newf("error deleting existing votes from database: %w", err)
-			}
 			return nil
 		}
 	)

internal/gtsmodel/list.go

@@ -27,7 +27,6 @@ type List struct {
 	Title         string        `bun:",nullzero,notnull,unique:listaccounttitle"`                   // Title of this list.
 	AccountID     string        `bun:"type:CHAR(26),notnull,nullzero,unique:listaccounttitle"`      // Account that created/owns the list
 	Account       *Account      `bun:"-"`                                                           // Account corresponding to accountID
-	ListEntries   []*ListEntry  `bun:"-"`                                                           // Entries contained by this list.
 	RepliesPolicy RepliesPolicy `bun:",nullzero,notnull,default:'followed'"`                        // RepliesPolicy for this list.
 	Exclusive     *bool         `bun:",nullzero,notnull,default:false"`                             // Hide posts from members of this list from your home timeline.
 }

internal/processing/account/export.go

@@ -98,7 +98,7 @@ func (p *Processor) ExportLists(
 	ctx context.Context,
 	requester *gtsmodel.Account,
 ) ([][]string, gtserror.WithCode) {
-	lists, err := p.state.DB.GetListsForAccountID(ctx, requester.ID)
+	lists, err := p.state.DB.GetListsByAccountID(ctx, requester.ID)
 	if err != nil && !errors.Is(err, db.ErrNoEntries) {
 		err = gtserror.Newf("db error getting lists: %w", err)
 		return nil, gtserror.NewErrorInternalError(err)

internal/processing/account/lists.go

@@ -30,8 +30,6 @@ import (
 	"github.com/superseriousbusiness/gotosocial/internal/log"
 )
 
-var noLists = make([]*apimodel.List, 0)
-
 // ListsGet returns all lists owned by requestingAccount, which contain a follow for targetAccountID.
 func (p *Processor) ListsGet(ctx context.Context, requestingAccount *gtsmodel.Account, targetAccountID string) ([]*apimodel.List, gtserror.WithCode) {
 	targetAccount, err := p.state.DB.GetAccountByID(ctx, targetAccountID)
@@ -54,52 +52,35 @@ func (p *Processor) ListsGet(ctx context.Context, requestingAccount *gtsmodel.Ac
 	// Requester has to follow targetAccount
 	// for them to be in any of their lists.
 	follow, err := p.state.DB.GetFollow(
+
 		// Don't populate follow.
 		gtscontext.SetBarebones(ctx),
 		requestingAccount.ID,
 		targetAccountID,
 	)
 	if err != nil && !errors.Is(err, db.ErrNoEntries) {
-		return nil, gtserror.NewErrorInternalError(fmt.Errorf("db error: %w", err))
+		err := gtserror.Newf("error getting follow: %w", err)
+		return nil, gtserror.NewErrorInternalError(err)
 	}
 
 	if follow == nil {
-		return noLists, nil // by definition we know they're in no lists
+		return []*apimodel.List{}, nil
 	}
 
-	listEntries, err := p.state.DB.GetListEntriesForFollowID(
+	// Get all lists that this follow is an entry within.
-		// Don't populate entries.
+	lists, err := p.state.DB.GetListsContainingFollowID(ctx, follow.ID)
-		gtscontext.SetBarebones(ctx),
+	if err != nil {
-		follow.ID,
+		err := gtserror.Newf("error getting lists for follow: %w", err)
-	)
+		return nil, gtserror.NewErrorInternalError(err)
-	if err != nil && !errors.Is(err, db.ErrNoEntries) {
-		return nil, gtserror.NewErrorInternalError(fmt.Errorf("db error: %w", err))
 	}
 
-	count := len(listEntries)
+	apiLists := make([]*apimodel.List, 0, len(lists))
-	if count == 0 {
+	for _, list := range lists {
-		return noLists, nil
-	}
-
-	apiLists := make([]*apimodel.List, 0, count)
-	for _, listEntry := range listEntries {
-		list, err := p.state.DB.GetListByID(
-			// Don't populate list.
-			gtscontext.SetBarebones(ctx),
-			listEntry.ListID,
-		)
-
-		if err != nil {
-			log.Debugf(ctx, "skipping list %s due to error %q", listEntry.ListID, err)
-			continue
-		}
-
 		apiList, err := p.converter.ListToAPIList(ctx, list)
 		if err != nil {
-			log.Debugf(ctx, "skipping list %s due to error %q", listEntry.ListID, err)
+			log.Errorf(ctx, "error converting list: %v", err)
 			continue
 		}
-
 		apiLists = append(apiLists, apiList)
 	}
 

internal/processing/admin/report.go

@@ -142,7 +142,7 @@ func (p *Processor) ReportResolve(ctx context.Context, account *gtsmodel.Account
 		columns = append(columns, "action_taken")
 	}
 
-	updatedReport, err := p.state.DB.UpdateReport(ctx, report, columns...)
+	err = p.state.DB.UpdateReport(ctx, report, columns...)
 	if err != nil {
 		return nil, gtserror.NewErrorInternalError(err)
 	}
@@ -156,7 +156,7 @@ func (p *Processor) ReportResolve(ctx context.Context, account *gtsmodel.Account
 		Target:         report.Account,
 	})
 
-	apimodelReport, err := p.converter.ReportToAdminAPIReport(ctx, updatedReport, account)
+	apimodelReport, err := p.converter.ReportToAdminAPIReport(ctx, report, account)
 	if err != nil {
 		return nil, gtserror.NewErrorInternalError(err)
 	}

internal/processing/common/status.go

@@ -189,7 +189,7 @@ func (p *Processor) GetAPIStatus(
 // such invalidation will, in that case, be handled by the processor instead.
 func (p *Processor) InvalidateTimelinedStatus(ctx context.Context, accountID string, statusID string) error {
 	// Get lists first + bail if this fails.
-	lists, err := p.state.DB.GetListsForAccountID(ctx, accountID)
+	lists, err := p.state.DB.GetListsByAccountID(ctx, accountID)
 	if err != nil {
 		return gtserror.Newf("db error getting lists for account %s: %w", accountID, err)
 	}

internal/processing/list/get.go

@@ -20,7 +20,6 @@ package list
 import (
 	"context"
 	"errors"
-	"fmt"
 
 	apimodel "github.com/superseriousbusiness/gotosocial/internal/api/model"
 	"github.com/superseriousbusiness/gotosocial/internal/db"
@@ -28,7 +27,7 @@ import (
 	"github.com/superseriousbusiness/gotosocial/internal/gtserror"
 	"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
 	"github.com/superseriousbusiness/gotosocial/internal/log"
-	"github.com/superseriousbusiness/gotosocial/internal/util"
+	"github.com/superseriousbusiness/gotosocial/internal/paging"
 )
 
 // Get returns the api model of one list with the given ID.
@@ -49,16 +48,14 @@ func (p *Processor) Get(ctx context.Context, account *gtsmodel.Account, id strin
 
 // GetAll returns multiple lists created by the given account, sorted by list ID DESC (newest first).
 func (p *Processor) GetAll(ctx context.Context, account *gtsmodel.Account) ([]*apimodel.List, gtserror.WithCode) {
-	lists, err := p.state.DB.GetListsForAccountID(
+	lists, err := p.state.DB.GetListsByAccountID(
+
 		// Use barebones ctx; no embedded
 		// structs necessary for simple GET.
 		gtscontext.SetBarebones(ctx),
 		account.ID,
 	)
-	if err != nil {
+	if err != nil && !errors.Is(err, db.ErrNoEntries) {
-		if errors.Is(err, db.ErrNoEntries) {
-			return nil, nil
-		}
 		return nil, gtserror.NewErrorInternalError(err)
 	}
 
@@ -68,66 +65,23 @@ func (p *Processor) GetAll(ctx context.Context, account *gtsmodel.Account) ([]*a
 		if errWithCode != nil {
 			return nil, errWithCode
 		}
-
 		apiLists = append(apiLists, apiList)
 	}
 
 	return apiLists, nil
 }
 
-// GetAllListAccounts returns all accounts that are in the given list,
-// owned by the given account. There's no pagination for this endpoint.
-//
-// See https://docs.joinmastodon.org/methods/lists/#query-parameters:
-//
-//	Limit: Integer. Maximum number of results. Defaults to 40 accounts.
-//	Max 80 accounts. Set to 0 in order to get all accounts without pagination.
-func (p *Processor) GetAllListAccounts(
-	ctx context.Context,
-	account *gtsmodel.Account,
-	listID string,
-) ([]*apimodel.Account, gtserror.WithCode) {
-	// Ensure list exists + is owned by requesting account.
-	_, errWithCode := p.getList(
-		// Use barebones ctx; no embedded
-		// structs necessary for this call.
-		gtscontext.SetBarebones(ctx),
-		account.ID,
-		listID,
-	)
-	if errWithCode != nil {
-		return nil, errWithCode
-	}
-
-	// Get all entries for this list.
-	listEntries, err := p.state.DB.GetListEntries(ctx, listID, "", "", "", 0)
-	if err != nil && !errors.Is(err, db.ErrNoEntries) {
-		err = gtserror.Newf("error getting list entries: %w", err)
-		return nil, gtserror.NewErrorInternalError(err)
-	}
-
-	// Extract accounts from list entries + add them to response.
-	accounts := make([]*apimodel.Account, 0, len(listEntries))
-	p.accountsFromListEntries(ctx, listEntries, func(acc *apimodel.Account) {
-		accounts = append(accounts, acc)
-	})
-
-	return accounts, nil
-}
-
 // GetListAccounts returns accounts that are in the given list, owned by the given account.
-// The additional parameters can be used for paging.
+// The additional parameters can be used for paging. Nil page param returns all accounts.
 func (p *Processor) GetListAccounts(
 	ctx context.Context,
 	account *gtsmodel.Account,
 	listID string,
-	maxID string,
+	page *paging.Page,
-	sinceID string,
-	minID string,
-	limit int,
 ) (*apimodel.PageableResponse, gtserror.WithCode) {
 	// Ensure list exists + is owned by requesting account.
 	_, errWithCode := p.getList(
+
 		// Use barebones ctx; no embedded
 		// structs necessary for this call.
 		gtscontext.SetBarebones(ctx),
@@ -138,71 +92,45 @@ func (p *Processor) GetListAccounts(
 		return nil, errWithCode
 	}
 
-	// To know which accounts are in the list,
+	// Get all accounts contained within list.
-	// we need to first get requested list entries.
+	accounts, err := p.state.DB.GetAccountsInList(ctx,
-	listEntries, err := p.state.DB.GetListEntries(ctx, listID, maxID, sinceID, minID, limit)
+		listID,
-	if err != nil && !errors.Is(err, db.ErrNoEntries) {
+		page,
-		err = fmt.Errorf("GetListAccounts: error getting list entries: %w", err)
+	)
+	if err != nil {
+		err := gtserror.Newf("db error getting accounts in list: %w", err)
 		return nil, gtserror.NewErrorInternalError(err)
 	}
 
-	count := len(listEntries)
+	// Check for any accounts.
+	count := len(accounts)
 	if count == 0 {
-		// No list entries means no accounts.
+		return paging.EmptyResponse(), nil
-		return util.EmptyPageableResponse(), nil
 	}
 
 	var (
+		// Preallocate expected frontend items.
 		items = make([]interface{}, 0, count)
 
-		// Set next + prev values before filtering and API
+		// Set paging low / high IDs.
-		// converting, so caller can still page properly.
+		lo = accounts[count-1].ID
-		nextMaxIDValue = listEntries[count-1].ID
+		hi = accounts[0].ID
-		prevMinIDValue = listEntries[0].ID
 	)
 
-	// Extract accounts from list entries + add them to response.
+	// Convert accounts to frontend.
-	p.accountsFromListEntries(ctx, listEntries, func(acc *apimodel.Account) {
+	for _, account := range accounts {
-		items = append(items, acc)
+		apiAccount, err := p.converter.AccountToAPIAccountPublic(ctx, account)
-	})
-
-	return util.PackagePageableResponse(util.PageableResponseParams{
-		Items:          items,
-		Path:           "/api/v1/lists/" + listID + "/accounts",
-		NextMaxIDValue: nextMaxIDValue,
-		PrevMinIDValue: prevMinIDValue,
-		Limit:          limit,
-	})
-}
-
-func (p *Processor) accountsFromListEntries(
-	ctx context.Context,
-	listEntries []*gtsmodel.ListEntry,
-	appendAcc func(*apimodel.Account),
-) {
-	// For each list entry, we want the account it points to.
-	// To get this, we need to first get the follow that the
-	// list entry pertains to, then extract the target account
-	// from that follow.
-	//
-	// We do paging not by account ID, but by list entry ID.
-	for _, listEntry := range listEntries {
-		if err := p.state.DB.PopulateListEntry(ctx, listEntry); err != nil {
-			log.Errorf(ctx, "error populating list entry: %v", err)
-			continue
-		}
-
-		if err := p.state.DB.PopulateFollow(ctx, listEntry.Follow); err != nil {
-			log.Errorf(ctx, "error populating follow: %v", err)
-			continue
-		}
-
-		apiAccount, err := p.converter.AccountToAPIAccountPublic(ctx, listEntry.Follow.TargetAccount)
 		if err != nil {
-			log.Errorf(ctx, "error converting to public api account: %v", err)
+			log.Errorf(ctx, "error converting to api account: %v", err)
 			continue
 		}
-
+		items = append(items, apiAccount)
-		appendAcc(apiAccount)
 	}
+
+	return paging.PackageResponse(paging.ResponseParams{
+		Items: items,
+		Path:  "/api/v1/lists/" + listID + "/accounts",
+		Next:  page.Next(lo, hi),
+		Prev:  page.Prev(lo, hi),
+	}), nil
 }

internal/processing/list/updateentries.go

@@ -23,73 +23,90 @@ import (
 	"fmt"
 
 	"github.com/superseriousbusiness/gotosocial/internal/db"
+	"github.com/superseriousbusiness/gotosocial/internal/gtscontext"
 	"github.com/superseriousbusiness/gotosocial/internal/gtserror"
 	"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
 	"github.com/superseriousbusiness/gotosocial/internal/id"
+	"github.com/superseriousbusiness/gotosocial/internal/util"
 )
 
 // AddToList adds targetAccountIDs to the given list, if valid.
 func (p *Processor) AddToList(ctx context.Context, account *gtsmodel.Account, listID string, targetAccountIDs []string) gtserror.WithCode {
+
 	// Ensure this list exists + account owns it.
-	list, errWithCode := p.getList(ctx, account.ID, listID)
+	_, errWithCode := p.getList(ctx, account.ID, listID)
 	if errWithCode != nil {
 		return errWithCode
 	}
 
-	// Pre-assemble list of entries to add. We *could* add these
+	// Get all follows that are entries in list.
-	// one by one as we iterate through accountIDs, but according
+	follows, err := p.state.DB.GetFollowsInList(
-	// to the Mastodon API we should only add them all once we know
-	// they're all valid, no partial updates.
-	listEntries := make([]*gtsmodel.ListEntry, 0, len(targetAccountIDs))
 
-	// Check each targetAccountID is valid.
+		// We only need barebones model.
-	//   - Follow must exist.
+		gtscontext.SetBarebones(ctx),
-	//   - Follow must not already be in the given list.
+		listID,
+		nil,
+	)
+	if err != nil {
+		err := gtserror.Newf("error getting list follows: %w", err)
+		return gtserror.NewErrorInternalError(err)
+	}
+
+	// Convert the follows to a hash set containing the target account IDs.
+	inFollows := util.ToSetFunc(follows, func(follow *gtsmodel.Follow) string {
+		return follow.TargetAccountID
+	})
+
+	// Preallocate a slice of expected list entries, we specifically
+	// gather and add all the target accounts in one go rather than
+	// individually, to ensure we don't end up with partial updates.
+	entries := make([]*gtsmodel.ListEntry, 0, len(targetAccountIDs))
+
+	// Iterate all the account IDs in given target list.
 	for _, targetAccountID := range targetAccountIDs {
-		// Ensure follow exists.
+
-		follow, err := p.state.DB.GetFollow(ctx, account.ID, targetAccountID)
+		// Look for follow to target account.
-		if err != nil {
+		if inFollows.Has(targetAccountID) {
-			if errors.Is(err, db.ErrNoEntries) {
+			text := fmt.Sprintf("account %s is already in list %s", targetAccountID, listID)
-				err = fmt.Errorf("you do not follow account %s", targetAccountID)
+			return gtserror.NewErrorUnprocessableEntity(errors.New(text), text)
-				return gtserror.NewErrorNotFound(err, err.Error())
+		}
-			}
+
+		// Get the actual follow to target.
+		follow, err := p.state.DB.GetFollow(
+
+			// We don't need any sub-models.
+			gtscontext.SetBarebones(ctx),
+			account.ID,
+			targetAccountID,
+		)
+		if err != nil && !errors.Is(err, db.ErrNoEntries) {
+			err := gtserror.Newf("db error getting follow: %w", err)
 			return gtserror.NewErrorInternalError(err)
 		}
 
-		// Ensure followID not already in list.
+		if follow == nil {
-		// This particular call to isInList will
+			text := fmt.Sprintf("account %s not currently followed", targetAccountID)
-		// never error, so just check entryID.
+			return gtserror.NewErrorNotFound(errors.New(text), text)
-		entryID, _ := isInList(
-			list,
-			follow.ID,
-			func(listEntry *gtsmodel.ListEntry) (string, error) {
-				// Looking for the listEntry follow ID.
-				return listEntry.FollowID, nil
-			},
-		)
-
-		// Empty entryID means entry with given
-		// followID wasn't found in the list.
-		if entryID != "" {
-			err = fmt.Errorf("account with id %s is already in list %s with entryID %s", targetAccountID, listID, entryID)
-			return gtserror.NewErrorUnprocessableEntity(err, err.Error())
 		}
 
-		// Entry wasn't in the list, we can add it.
+		// Generate new entry for this follow in list.
-		listEntries = append(listEntries, &gtsmodel.ListEntry{
+		entries = append(entries, &gtsmodel.ListEntry{
 			ID:       id.NewULID(),
 			ListID:   listID,
 			FollowID: follow.ID,
 		})
 	}
 
-	// If we get to here we can assume all
+	// Add all of the gathered list entries to the database.
-	// entries are valid, so try to add them.
+	switch err := p.state.DB.PutListEntries(ctx, entries); {
-	if err := p.state.DB.PutListEntries(ctx, listEntries); err != nil {
+	case err == nil:
-		if errors.Is(err, db.ErrAlreadyExists) {
+
-			err = fmt.Errorf("one or more errors inserting list entries: %w", err)
+	case errors.Is(err, db.ErrAlreadyExists):
-			return gtserror.NewErrorUnprocessableEntity(err, err.Error())
+		err := gtserror.Newf("conflict adding list entry: %w", err)
-		}
+		return gtserror.NewErrorUnprocessableEntity(err)
+
+	default:
+		err := gtserror.Newf("db error inserting list entries: %w", err)
 		return gtserror.NewErrorInternalError(err)
 	}
 
@@ -97,55 +114,61 @@ func (p *Processor) AddToList(ctx context.Context, account *gtsmodel.Account, li
 }
 
 // RemoveFromList removes targetAccountIDs from the given list, if valid.
-func (p *Processor) RemoveFromList(ctx context.Context, account *gtsmodel.Account, listID string, targetAccountIDs []string) gtserror.WithCode {
+func (p *Processor) RemoveFromList(
+	ctx context.Context,
+	account *gtsmodel.Account,
+	listID string,
+	targetAccountIDs []string,
+) gtserror.WithCode {
 	// Ensure this list exists + account owns it.
-	list, errWithCode := p.getList(ctx, account.ID, listID)
+	_, errWithCode := p.getList(ctx, account.ID, listID)
 	if errWithCode != nil {
 		return errWithCode
 	}
 
-	// For each targetAccountID, we want to check if
+	// Get all follows that are entries in list.
-	// a follow with that targetAccountID is in the
+	follows, err := p.state.DB.GetFollowsInList(
-	// given list. If it is in there, we want to remove
+
-	// it from the list.
+		// We only need barebones model.
+		gtscontext.SetBarebones(ctx),
+		listID,
+		nil,
+	)
+	if err != nil {
+		err := gtserror.Newf("error getting list follows: %w", err)
+		return gtserror.NewErrorInternalError(err)
+	}
+
+	// Convert the follows to a map keyed by the target account ID.
+	followsMap := util.KeyBy(follows, func(follow *gtsmodel.Follow) string {
+		return follow.TargetAccountID
+	})
+
+	var errs gtserror.MultiError
+
+	// Iterate all the account IDs in given target list.
 	for _, targetAccountID := range targetAccountIDs {
-		// Check if targetAccountID is
-		// on a follow in the list.
-		entryID, err := isInList(
-			list,
-			targetAccountID,
-			func(listEntry *gtsmodel.ListEntry) (string, error) {
-				// We need the follow so populate this
-				// entry, if it's not already populated.
-				if err := p.state.DB.PopulateListEntry(ctx, listEntry); err != nil {
-					return "", err
-				}
 
-				// Looking for the list entry targetAccountID.
+		// Look for follow targetting this account.
-				return listEntry.Follow.TargetAccountID, nil
+		follow, ok := followsMap[targetAccountID]
-			},
-		)
 
-		// Error may be returned here if there was an issue
+		if !ok {
-		// populating the list entry. We only return on proper
+			// not in list.
-		// DB errors, we can just skip no entry errors.
-		if err != nil && !errors.Is(err, db.ErrNoEntries) {
-			err = fmt.Errorf("error checking if targetAccountID %s was in list %s: %w", targetAccountID, listID, err)
-			return gtserror.NewErrorInternalError(err)
-		}
-
-		if entryID == "" {
-			// There was an errNoEntries or targetAccount
-			// wasn't in this list anyway, so we can skip it.
 			continue
 		}
 
-		// TargetAccount was in the list, remove the entry.
+		// Delete the list entry containing follow ID in list.
-		if err := p.state.DB.DeleteListEntry(ctx, entryID); err != nil && !errors.Is(err, db.ErrNoEntries) {
+		err := p.state.DB.DeleteListEntry(ctx, listID, follow.ID)
-			err = fmt.Errorf("error removing list entry %s from list %s: %w", entryID, listID, err)
+		if err != nil && !errors.Is(err, db.ErrNoEntries) {
-			return gtserror.NewErrorInternalError(err)
+			errs.Appendf("error removing list entry: %w", err)
+			continue
 		}
 	}
 
+	// Wrap errors in errWithCode if set.
+	if err := errs.Combine(); err != nil {
+		return gtserror.NewErrorInternalError(err)
+	}
+
 	return nil
 }

internal/processing/list/util.go

@@ -33,18 +33,25 @@ import (
 // appropriate errors so caller doesn't need to bother.
 func (p *Processor) getList(ctx context.Context, accountID string, listID string) (*gtsmodel.List, gtserror.WithCode) {
 	list, err := p.state.DB.GetListByID(ctx, listID)
-	if err != nil {
+	if err != nil && !errors.Is(err, db.ErrNoEntries) {
-		if errors.Is(err, db.ErrNoEntries) {
+		err := gtserror.Newf("db error getting list: %w", err)
-			// List doesn't seem to exist.
-			return nil, gtserror.NewErrorNotFound(err)
-		}
-		// Real database error.
 		return nil, gtserror.NewErrorInternalError(err)
 	}
 
+	if list == nil {
+		const text = "list not found"
+		return nil, gtserror.NewErrorNotFound(
+			errors.New(text),
+			text,
+		)
+	}
+
 	if list.AccountID != accountID {
-		err = fmt.Errorf("list with id %s does not belong to account %s", list.ID, accountID)
+		const text = "list not found"
-		return nil, gtserror.NewErrorNotFound(err)
+		return nil, gtserror.NewErrorNotFound(
+			errors.New("list does not belong to account"),
+			text,
+		)
 	}
 
 	return list, nil
@@ -60,26 +67,3 @@ func (p *Processor) apiList(ctx context.Context, list *gtsmodel.List) (*apimodel
 
 	return apiList, nil
 }
-
-// isInList check if thisID is equal to the result of thatID
-// for any entry in the given list.
-//
-// Will return the id of the listEntry if true, empty if false,
-// or an error if the result of thatID returns an error.
-func isInList(
-	list *gtsmodel.List,
-	thisID string,
-	getThatID func(listEntry *gtsmodel.ListEntry) (string, error),
-) (string, error) {
-	for _, listEntry := range list.ListEntries {
-		thatID, err := getThatID(listEntry)
-		if err != nil {
-			return "", err
-		}
-
-		if thisID == thatID {
-			return listEntry.ID, nil
-		}
-	}
-	return "", nil
-}

internal/processing/workers/fromclientapi_test.go

@@ -649,7 +649,8 @@ func (suite *FromClientAPITestSuite) TestProcessCreateStatusListRepliesPolicyLis
 	}
 
 	// Remove turtle from the list.
-	if err := testStructs.State.DB.DeleteListEntry(ctx, suite.testListEntries["local_account_1_list_1_entry_1"].ID); err != nil {
+	testEntry := suite.testListEntries["local_account_1_list_1_entry_1"]
+	if err := testStructs.State.DB.DeleteListEntry(ctx, testEntry.ListID, testEntry.FollowID); err != nil {
 		suite.FailNow(err.Error())
 	}
 

internal/processing/workers/surfacetimeline.go

@@ -21,7 +21,6 @@ import (
 	"context"
 	"errors"
 
-	"github.com/superseriousbusiness/gotosocial/internal/db"
 	statusfilter "github.com/superseriousbusiness/gotosocial/internal/filter/status"
 	"github.com/superseriousbusiness/gotosocial/internal/filter/usermute"
 	"github.com/superseriousbusiness/gotosocial/internal/gtscontext"
@@ -63,13 +62,9 @@ func (s *Surface) timelineAndNotifyStatus(ctx context.Context, status *gtsmodel.
 		})
 	}
 
-	// Timeline the status for each local follower of this account.
+	// Timeline the status for each local follower of this account. This will
-	// This will also handle notifying any followers with notify
+	// also handle notifying any followers with notify set to true on their follow.
-	// set to true on their follow.
+	homeTimelinedAccountIDs := s.timelineAndNotifyStatusForFollowers(ctx, status, follows)
-	homeTimelinedAccountIDs, err := s.timelineAndNotifyStatusForFollowers(ctx, status, follows)
-	if err != nil {
-		return gtserror.Newf("error timelining status %s for followers: %w", status.ID, err)
-	}
 
 	// Timeline the status for each local account who follows a tag used by this status.
 	if err := s.timelineAndNotifyStatusForTagFollowers(ctx, status, homeTimelinedAccountIDs); err != nil {
@@ -105,12 +100,10 @@ func (s *Surface) timelineAndNotifyStatusForFollowers(
 	ctx context.Context,
 	status *gtsmodel.Status,
 	follows []*gtsmodel.Follow,
-) ([]string, error) {
+) (homeTimelinedAccountIDs []string) {
 	var (
-		errs                    gtserror.MultiError
+		boost = (status.BoostOfID != "")
-		boost                   = status.BoostOfID != ""
+		reply = (status.InReplyToURI != "")
-		reply                   = status.InReplyToURI != ""
-		homeTimelinedAccountIDs = []string{}
 	)
 
 	for _, follow := range follows {
@@ -130,7 +123,7 @@ func (s *Surface) timelineAndNotifyStatusForFollowers(
 			ctx, follow.Account, status,
 		)
 		if err != nil {
-			errs.Appendf("error checking status %s hometimelineability: %w", status.ID, err)
+			log.Errorf(ctx, "error checking status home visibility for follow: %v", err)
 			continue
 		}
 
@@ -139,29 +132,36 @@ func (s *Surface) timelineAndNotifyStatusForFollowers(
 			continue
 		}
 
+		// Get relevant filters and mutes for this follow's account.
+		// (note the origin account of the follow is receiver of status).
 		filters, mutes, err := s.getFiltersAndMutes(ctx, follow.AccountID)
 		if err != nil {
-			errs.Append(err)
+			log.Error(ctx, err)
 			continue
 		}
 
-		// Add status to any relevant lists
+		// Add status to any relevant lists for this follow, if applicable.
-		// for this follow, if applicable.
+		listTimelined, exclusive, err := s.listTimelineStatusForFollow(ctx,
-		exclusive, listTimelined := s.listTimelineStatusForFollow(
-			ctx,
 			status,
 			follow,
-			&errs,
 			filters,
 			mutes,
 		)
+		if err != nil {
+			log.Errorf(ctx, "error list timelining status: %v", err)
+			continue
+		}
 
-		// Add status to home timeline for owner
+		var homeTimelined bool
-		// of this follow, if applicable.
+
-		homeTimelined := false
+		// If this was timelined into
+		// list with exclusive flag set,
+		// don't add to home timeline.
 		if !exclusive {
-			homeTimelined, err = s.timelineStatus(
+
-				ctx,
+			// Add status to home timeline for owner of
+			// this follow (origin account), if applicable.
+			homeTimelined, err = s.timelineStatus(ctx,
 				s.State.Timelines.Home.IngestOne,
 				follow.AccountID, // home timelines are keyed by account ID
 				follow.Account,
@@ -171,10 +171,12 @@ func (s *Surface) timelineAndNotifyStatusForFollowers(
 				mutes,
 			)
 			if err != nil {
-				errs.Appendf("error home timelining status: %w", err)
+				log.Errorf(ctx, "error home timelining status: %v", err)
 				continue
 			}
+
 			if homeTimelined {
+				// If hometimelined, add to list of returned account IDs.
 				homeTimelinedAccountIDs = append(homeTimelinedAccountIDs, follow.AccountID)
 			}
 		}
@@ -210,11 +212,12 @@ func (s *Surface) timelineAndNotifyStatusForFollowers(
 			status.Account,
 			status.ID,
 		); err != nil {
-			errs.Appendf("error notifying account %s about new status: %w", follow.AccountID, err)
+			log.Errorf(ctx, "error notifying status for account: %v", err)
+			continue
 		}
 	}
 
-	return homeTimelinedAccountIDs, errs.Combine()
+	return homeTimelinedAccountIDs
 }
 
 // listTimelineStatusForFollow puts the given status
@@ -227,107 +230,59 @@ func (s *Surface) listTimelineStatusForFollow(
 	ctx context.Context,
 	status *gtsmodel.Status,
 	follow *gtsmodel.Follow,
-	errs *gtserror.MultiError,
 	filters []*gtsmodel.Filter,
 	mutes *usermute.CompiledUserMuteList,
-) (bool, bool) {
+) (timelined bool, exclusive bool, err error) {
-	// To put this status in appropriate list timelines,
-	// we need to get each listEntry that pertains to
-	// this follow. Then, we want to iterate through all
-	// those list entries, and add the status to the list
-	// that the entry belongs to if it meets criteria for
-	// inclusion in the list.
 
-	listEntries, err := s.getListEntries(ctx, follow)
+	// Get all lists that contain this given follow.
+	lists, err := s.State.DB.GetListsContainingFollowID(
+
+		// We don't need list sub-models.
+		gtscontext.SetBarebones(ctx),
+		follow.ID,
+	)
 	if err != nil {
-		errs.Append(err)
+		return false, false, gtserror.Newf("error getting lists for follow: %w", err)
-		return false, false
-	}
-	exclusive, err := s.isAnyListExclusive(ctx, listEntries)
-	if err != nil {
-		errs.Append(err)
-		return false, false
 	}
 
-	// Check eligibility for each list entry (if any).
+	for _, list := range lists {
-	listTimelined := false
+		// Check whether list is eligible for this status.
-	for _, listEntry := range listEntries {
+		eligible, err := s.listEligible(ctx, list, status)
-		eligible, err := s.listEligible(ctx, listEntry, status)
 		if err != nil {
-			errs.Appendf("error checking list eligibility: %w", err)
+			log.Errorf(ctx, "error checking list eligibility: %v", err)
 			continue
 		}
 
 		if !eligible {
-			// Don't add this.
 			continue
 		}
 
+		// Update exclusive flag if list is so.
+		exclusive = exclusive || *list.Exclusive
+
 		// At this point we are certain this status
 		// should be included in the timeline of the
 		// list that this list entry belongs to.
-		timelined, err := s.timelineStatus(
+		listTimelined, err := s.timelineStatus(
 			ctx,
 			s.State.Timelines.List.IngestOne,
-			listEntry.ListID, // list timelines are keyed by list ID
+			list.ID, // list timelines are keyed by list ID
 			follow.Account,
 			status,
-			stream.TimelineList+":"+listEntry.ListID, // key streamType to this specific list
+			stream.TimelineList+":"+list.ID, // key streamType to this specific list
 			filters,
 			mutes,
 		)
 		if err != nil {
-			errs.Appendf("error adding status to timeline for list %s: %w", listEntry.ListID, err)
+			log.Errorf(ctx, "error adding status to list timeline: %v", err)
-			// implicit continue
+			continue
 		}
-		listTimelined = listTimelined || timelined
+
+		// Update flag based on if timelined.
+		timelined = timelined || listTimelined
 	}
 
-	return exclusive, listTimelined
+	return timelined, exclusive, nil
-}
-
-// getListEntries returns list entries for a given follow.
-func (s *Surface) getListEntries(ctx context.Context, follow *gtsmodel.Follow) ([]*gtsmodel.ListEntry, error) {
-	// Get every list entry that targets this follow's ID.
-	listEntries, err := s.State.DB.GetListEntriesForFollowID(
-		// We only need the list IDs.
-		gtscontext.SetBarebones(ctx),
-		follow.ID,
-	)
-	if err != nil && !errors.Is(err, db.ErrNoEntries) {
-		return nil, gtserror.Newf("DB error getting list entries: %v", err)
-	}
-	return listEntries, nil
-}
-
-// isAnyListExclusive determines whether any provided list entry corresponds to an exclusive list.
-func (s *Surface) isAnyListExclusive(ctx context.Context, listEntries []*gtsmodel.ListEntry) (bool, error) {
-	if len(listEntries) == 0 {
-		return false, nil
-	}
-
-	listIDs := make([]string, 0, len(listEntries))
-	for _, listEntry := range listEntries {
-		listIDs = append(listIDs, listEntry.ListID)
-	}
-	lists, err := s.State.DB.GetListsByIDs(
-		// We only need the list exclusive flags.
-		gtscontext.SetBarebones(ctx),
-		listIDs,
-	)
-	if err != nil && !errors.Is(err, db.ErrNoEntries) {
-		return false, gtserror.Newf("DB error getting lists for list entries: %v", err)
-	}
-
-	if len(lists) == 0 {
-		return false, nil
-	}
-	for _, list := range lists {
-		if *list.Exclusive {
-			return true, nil
-		}
-	}
-	return false, nil
 }
 
 // getFiltersAndMutes returns an account's filters and mutes.
@@ -341,8 +296,8 @@ func (s *Surface) getFiltersAndMutes(ctx context.Context, accountID string) ([]*
 	if err != nil {
 		return nil, nil, gtserror.Newf("couldn't retrieve mutes for account %s: %w", accountID, err)
 	}
-	compiledMutes := usermute.NewCompiledUserMuteList(mutes)
 
+	compiledMutes := usermute.NewCompiledUserMuteList(mutes)
 	return filters, compiledMutes, err
 }
 
@@ -351,7 +306,7 @@ func (s *Surface) getFiltersAndMutes(ctx context.Context, accountID string) ([]*
 // belongs to, based on the replies policy of the list.
 func (s *Surface) listEligible(
 	ctx context.Context,
-	listEntry *gtsmodel.ListEntry,
+	list *gtsmodel.List,
 	status *gtsmodel.Status,
 ) (bool, error) {
 	if status.InReplyToURI == "" {
@@ -366,18 +321,6 @@ func (s *Surface) listEligible(
 		return false, nil
 	}
 
-	// Status is a reply to a known account.
-	// We need to fetch the list that this
-	// entry belongs to, in order to check
-	// the list's replies policy.
-	list, err := s.State.DB.GetListByID(
-		ctx, listEntry.ListID,
-	)
-	if err != nil {
-		err := gtserror.Newf("db error getting list %s: %w", listEntry.ListID, err)
-		return false, err
-	}
-
 	switch list.RepliesPolicy {
 	case gtsmodel.RepliesPolicyNone:
 		// This list should not show
@@ -390,20 +333,15 @@ func (s *Surface) listEligible(
 		//
 		// Check if replied-to account is
 		// also included in this list.
-		includes, err := s.State.DB.ListIncludesAccount(
+		in, err := s.State.DB.IsAccountInList(ctx,
-			ctx,
 			list.ID,
 			status.InReplyToAccountID,
 		)
 		if err != nil {
-			err := gtserror.Newf(
+			err := gtserror.Newf("db error checking if account in list: %w", err)
-				"db error checking if account %s in list %s: %w",
-				status.InReplyToAccountID, listEntry.ListID, err,
-			)
 			return false, err
 		}
-
+		return in, nil
-		return includes, nil
 
 	case gtsmodel.RepliesPolicyFollowed:
 		// This list should show replies
@@ -418,22 +356,14 @@ func (s *Surface) listEligible(
 			status.InReplyToAccountID,
 		)
 		if err != nil {
-			err := gtserror.Newf(
+			err := gtserror.Newf("db error checking if account followed: %w", err)
-				"db error checking if account %s is followed by %s: %w",
-				status.InReplyToAccountID, list.AccountID, err,
-			)
 			return false, err
 		}
-
 		return follows, nil
 
 	default:
-		// HUH??
+		log.Panicf(ctx, "unknown reply policy: %s", list.RepliesPolicy)
-		err := gtserror.Newf(
+		return false, nil // unreachable code
-			"reply policy '%s' not recognized on list %s",
-			list.RepliesPolicy, list.ID,
-		)
-		return false, err
 	}
 }
 
@@ -452,6 +382,7 @@ func (s *Surface) timelineStatus(
 	filters []*gtsmodel.Filter,
 	mutes *usermute.CompiledUserMuteList,
 ) (bool, error) {
+
 	// Ingest status into given timeline using provided function.
 	if inserted, err := ingest(ctx, timelineID, status); err != nil {
 		err = gtserror.Newf("error ingesting status %s: %w", status.ID, err)
@@ -461,7 +392,7 @@ func (s *Surface) timelineStatus(
 		return false, nil
 	}
 
-	// The status was inserted so stream it to the user.
+	// Convert updated database model to frontend model.
 	apiStatus, err := s.Converter.StatusToAPIStatus(ctx,
 		status,
 		account,
@@ -473,6 +404,8 @@ func (s *Surface) timelineStatus(
 		err = gtserror.Newf("error converting status %s to frontend representation: %w", status.ID, err)
 		return true, err
 	}
+
+	// The status was inserted so stream it to the user.
 	s.Stream.Update(ctx, account, apiStatus, streamType)
 
 	return true, nil
@@ -492,7 +425,8 @@ func (s *Surface) timelineAndNotifyStatusForTagFollowers(
 	}
 
 	if status.BoostOf != nil {
-		// Unwrap boost and work with the original status.
+		// Unwrap boost and work
+		// with the original status.
 		status = status.BoostOf
 	}
 
@@ -523,6 +457,7 @@ func (s *Surface) timelineAndNotifyStatusForTagFollowers(
 			)
 		}
 	}
+
 	return errs.Combine()
 }
 
@@ -667,17 +602,15 @@ func (s *Surface) timelineStatusUpdate(ctx context.Context, status *gtsmodel.Sta
 		follows = append(follows, &gtsmodel.Follow{
 			AccountID:   status.AccountID,
 			Account:     status.Account,
-			Notify:      func() *bool { b := false; return &b }(), // Account shouldn't notify itself.
+			Notify:      util.Ptr(false), // Account shouldn't notify itself.
-			ShowReblogs: func() *bool { b := true; return &b }(),  // Account should show own reblogs.
+			ShowReblogs: util.Ptr(true),  // Account should show own reblogs.
 		})
 	}
 
-	// Push to streams for each local follower of this account.
+	// Push updated status to streams for each local follower of this account.
-	homeTimelinedAccountIDs, err := s.timelineStatusUpdateForFollowers(ctx, status, follows)
+	homeTimelinedAccountIDs := s.timelineStatusUpdateForFollowers(ctx, status, follows)
-	if err != nil {
-		return gtserror.Newf("error timelining status %s for followers: %w", status.ID, err)
-	}
 
+	// Push updated status to streams for each local follower of tags in status, if applicable.
 	if err := s.timelineStatusUpdateForTagFollowers(ctx, status, homeTimelinedAccountIDs); err != nil {
 		return gtserror.Newf("error timelining status %s for tag followers: %w", status.ID, err)
 	}
@@ -695,12 +628,7 @@ func (s *Surface) timelineStatusUpdateForFollowers(
 	ctx context.Context,
 	status *gtsmodel.Status,
 	follows []*gtsmodel.Follow,
-) ([]string, error) {
+) (homeTimelinedAccountIDs []string) {
-	var (
-		errs                    gtserror.MultiError
-		homeTimelinedAccountIDs = []string{}
-	)
-
 	for _, follow := range follows {
 		// Check to see if the status is timelineable for this follower,
 		// taking account of its visibility, who it replies to, and, if
@@ -718,7 +646,7 @@ func (s *Surface) timelineStatusUpdateForFollowers(
 			ctx, follow.Account, status,
 		)
 		if err != nil {
-			errs.Appendf("error checking status %s hometimelineability: %w", status.ID, err)
+			log.Errorf(ctx, "error checking status home visibility for follow: %v", err)
 			continue
 		}
 
@@ -727,31 +655,36 @@ func (s *Surface) timelineStatusUpdateForFollowers(
 			continue
 		}
 
+		// Get relevant filters and mutes for this follow's account.
+		// (note the origin account of the follow is receiver of status).
 		filters, mutes, err := s.getFiltersAndMutes(ctx, follow.AccountID)
 		if err != nil {
-			errs.Append(err)
+			log.Error(ctx, err)
 			continue
 		}
 
-		// Add status to any relevant lists
+		// Add status to relevant lists for this follow, if applicable.
-		// for this follow, if applicable.
+		_, exclusive, err := s.listTimelineStatusUpdateForFollow(ctx,
-		exclusive := s.listTimelineStatusUpdateForFollow(
-			ctx,
 			status,
 			follow,
-			&errs,
 			filters,
 			mutes,
 		)
+		if err != nil {
+			log.Errorf(ctx, "error list timelining status: %v", err)
+			continue
+		}
 
+		// If this was timelined into
+		// list with exclusive flag set,
+		// don't add to home timeline.
 		if exclusive {
 			continue
 		}
 
-		// Add status to home timeline for owner
+		// Add status to home timeline for owner of
-		// of this follow, if applicable.
+		// this follow (origin account), if applicable.
-		homeTimelined, err := s.timelineStreamStatusUpdate(
+		homeTimelined, err := s.timelineStreamStatusUpdate(ctx,
-			ctx,
 			follow.Account,
 			status,
 			stream.TimelineHome,
@@ -759,15 +692,17 @@ func (s *Surface) timelineStatusUpdateForFollowers(
 			mutes,
 		)
 		if err != nil {
-			errs.Appendf("error home timelining status: %w", err)
+			log.Errorf(ctx, "error home timelining status: %v", err)
 			continue
 		}
+
 		if homeTimelined {
+			// If hometimelined, add to list of returned account IDs.
 			homeTimelinedAccountIDs = append(homeTimelinedAccountIDs, follow.AccountID)
 		}
 	}
 
-	return homeTimelinedAccountIDs, errs.Combine()
+	return homeTimelinedAccountIDs
 }
 
 // listTimelineStatusUpdateForFollow pushes edits of the given status
@@ -779,58 +714,59 @@ func (s *Surface) listTimelineStatusUpdateForFollow(
 	ctx context.Context,
 	status *gtsmodel.Status,
 	follow *gtsmodel.Follow,
-	errs *gtserror.MultiError,
 	filters []*gtsmodel.Filter,
 	mutes *usermute.CompiledUserMuteList,
-) bool {
+) (bool, bool, error) {
-	// To put this status in appropriate list timelines,
-	// we need to get each listEntry that pertains to
-	// this follow. Then, we want to iterate through all
-	// those list entries, and add the status to the list
-	// that the entry belongs to if it meets criteria for
-	// inclusion in the list.
 
-	listEntries, err := s.getListEntries(ctx, follow)
+	// Get all lists that contain this given follow.
+	lists, err := s.State.DB.GetListsContainingFollowID(
+
+		// We don't need list sub-models.
+		gtscontext.SetBarebones(ctx),
+		follow.ID,
+	)
 	if err != nil {
-		errs.Append(err)
+		return false, false, gtserror.Newf("error getting lists for follow: %w", err)
-		return false
-	}
-	exclusive, err := s.isAnyListExclusive(ctx, listEntries)
-	if err != nil {
-		errs.Append(err)
-		return false
 	}
 
-	// Check eligibility for each list entry (if any).
+	var exclusive, timelined bool
-	for _, listEntry := range listEntries {
+	for _, list := range lists {
-		eligible, err := s.listEligible(ctx, listEntry, status)
+
+		// Check whether list is eligible for this status.
+		eligible, err := s.listEligible(ctx, list, status)
 		if err != nil {
-			errs.Appendf("error checking list eligibility: %w", err)
+			log.Errorf(ctx, "error checking list eligibility: %v", err)
 			continue
 		}
 
 		if !eligible {
-			// Don't add this.
 			continue
 		}
 
+		// Update exclusive flag if list is so.
+		exclusive = exclusive || *list.Exclusive
+
 		// At this point we are certain this status
 		// should be included in the timeline of the
 		// list that this list entry belongs to.
-		if _, err := s.timelineStreamStatusUpdate(
+		listTimelined, err := s.timelineStreamStatusUpdate(
 			ctx,
 			follow.Account,
 			status,
-			stream.TimelineList+":"+listEntry.ListID, // key streamType to this specific list
+			stream.TimelineList+":"+list.ID, // key streamType to this specific list
 			filters,
 			mutes,
-		); err != nil {
+		)
-			errs.Appendf("error adding status to timeline for list %s: %w", listEntry.ListID, err)
+		if err != nil {
-			// implicit continue
+			log.Errorf(ctx, "error adding status to list timeline: %v", err)
+			continue
 		}
+
+		// Update flag based on if timelined.
+		timelined = timelined || listTimelined
 	}
 
-	return exclusive
+	return timelined, exclusive, nil
 }
 
 // timelineStatusUpdate streams the edited status to the user using the
@@ -845,16 +781,31 @@ func (s *Surface) timelineStreamStatusUpdate(
 	filters []*gtsmodel.Filter,
 	mutes *usermute.CompiledUserMuteList,
 ) (bool, error) {
-	apiStatus, err := s.Converter.StatusToAPIStatus(ctx, status, account, statusfilter.FilterContextHome, filters, mutes)
+
-	if errors.Is(err, statusfilter.ErrHideStatus) {
+	// Convert updated database model to frontend model.
+	apiStatus, err := s.Converter.StatusToAPIStatus(ctx,
+		status,
+		account,
+		statusfilter.FilterContextHome,
+		filters,
+		mutes,
+	)
+
+	switch {
+	case err == nil:
+		// no issue.
+
+	case errors.Is(err, statusfilter.ErrHideStatus):
 		// Don't put this status in the stream.
 		return false, nil
+
+	default:
+		return false, gtserror.Newf("error converting status: %w", err)
 	}
-	if err != nil {
+
-		err = gtserror.Newf("error converting status %s to frontend representation: %w", status.ID, err)
+	// The status was updated so stream it to the user.
-		return false, err
-	}
 	s.Stream.StatusUpdate(ctx, account, apiStatus, streamType)
+
 	return true, nil
 }
 

internal/processing/workers/util.go

@@ -126,11 +126,6 @@ func (u *utils) wipeStatus(
 			errs.Appendf("error deleting status poll: %w", err)
 		}
 
-		// Delete any poll votes pointing to this poll ID.
-		if err := u.state.DB.DeletePollVotes(ctx, pollID); err != nil {
-			errs.Appendf("error deleting status poll votes: %w", err)
-		}
-
 		// Cancel any scheduled expiry task for poll.
 		_ = u.state.Workers.Scheduler.Cancel(pollID)
 	}

internal/typeutils/csv.go

@@ -34,16 +34,14 @@ func (c *Converter) AccountToExportStats(
 	a *gtsmodel.Account,
 ) (*apimodel.AccountExportStats, error) {
 	// Ensure account stats populated.
-	if a.Stats == nil {
+	if err := c.state.DB.PopulateAccountStats(ctx, a); err != nil {
-		if err := c.state.DB.PopulateAccountStats(ctx, a); err != nil {
+		return nil, gtserror.Newf(
-			return nil, gtserror.Newf(
+			"error getting stats for account %s: %w",
-				"error getting stats for account %s: %w",
+			a.ID, err,
-				a.ID, err,
+		)
-			)
-		}
 	}
 
-	listsCount, err := c.state.DB.CountListsForAccountID(ctx, a.ID)
+	listsCount, err := c.state.DB.CountListsByAccountID(ctx, a.ID)
 	if err != nil {
 		return nil, gtserror.Newf(
 			"error counting lists for account %s: %w",
@@ -202,6 +200,7 @@ func (c *Converter) ListsToCSV(
 	ctx context.Context,
 	lists []*gtsmodel.List,
 ) ([][]string, error) {
+
 	// We need to know our own domain for this.
 	// Try account domain, fall back to host.
 	thisDomain := config.GetAccountDomain()
@@ -215,41 +214,23 @@ func (c *Converter) ListsToCSV(
 
 	// For each item, add a record.
 	for _, list := range lists {
-		for _, entry := range list.ListEntries {
-			if entry.Follow == nil {
-				// Retrieve follow.
-				var err error
-				entry.Follow, err = c.state.DB.GetFollowByID(
-					ctx,
-					entry.FollowID,
-				)
-				if err != nil {
-					return nil, gtserror.Newf(
-						"db error getting follow for list entry %s: %w",
-						entry.ID, err,
-					)
-				}
-			}
 
-			if entry.Follow.TargetAccount == nil {
+		// Get all follows contained with this list.
-				// Retrieve account.
+		follows, err := c.state.DB.GetFollowsInList(ctx,
-				var err error
+			list.ID,
-				entry.Follow.TargetAccount, err = c.state.DB.GetAccountByID(
+			nil,
-					// Barebones is fine here.
+		)
-					gtscontext.SetBarebones(ctx),
+		if err != nil {
-					entry.Follow.TargetAccountID,
+			err := gtserror.Newf("db error getting follows for list: %w", err)
-				)
+			return nil, err
-				if err != nil {
+		}
-					return nil, gtserror.Newf(
-						"db error getting target account for list entry %s: %w",
-						entry.ID, err,
-					)
-				}
-			}
 
+		// Append each follow as CSV record.
+		for _, follow := range follows {
 			var (
-				username = entry.Follow.TargetAccount.Username
+				// Extract username / domain from target.
-				domain   = entry.Follow.TargetAccount.Domain
+				username = follow.TargetAccount.Username
+				domain   = follow.TargetAccount.Domain
 			)
 
 			if domain == "" {
@@ -259,14 +240,16 @@ func (c *Converter) ListsToCSV(
 			}
 
 			records = append(records, []string{
-				// List title: eg., Very cool list
+				// List title: e.g.
+				// Very cool list
 				list.Title,
-				// Account address: eg., someone@example.org
+
-				// -- NOTE: without the leading '@'!
+				// Account address: e.g.,
+				// someone@example.org
+				// NOTE: without the leading '@'!
 				username + "@" + domain,
 			})
 		}
-
 	}
 
 	return records, nil

internal/util/unique.go

@@ -17,12 +17,23 @@
 
 package util
 
+// KeyBy creates a map of T->S, keyed by value returned from key func.
+func KeyBy[S any, T comparable](in []S, key func(S) T) map[T]S {
+	if key == nil {
+		panic("nil func")
+	}
+	m := make(map[T]S, len(in))
+	for _, v := range in {
+		m[key(v)] = v
+	}
+	return m
+}
+
 // Set represents a hashmap of only keys,
 // useful for deduplication / key checking.
 type Set[T comparable] map[T]struct{}
 
-// ToSet creates a Set[T] from given values,
+// ToSet creates a Set[T] from given values.
-// noting that this does not maintain any order.
 func ToSet[T comparable](in []T) Set[T] {
 	set := make(Set[T], len(in))
 	for _, v := range in {
@@ -31,8 +42,19 @@ func ToSet[T comparable](in []T) Set[T] {
 	return set
 }
 
-// FromSet extracts the values from set to slice,
+// ToSetFunc creates a Set[T] from input slice, keys provided by func.
-// noting that this does not maintain any order.
+func ToSetFunc[S any, T comparable](in []S, key func(S) T) Set[T] {
+	if key == nil {
+		panic("nil func")
+	}
+	set := make(Set[T], len(in))
+	for _, v := range in {
+		set[key(v)] = struct{}{}
+	}
+	return set
+}
+
+// FromSet extracts the values from set to slice.
 func FromSet[T comparable](in Set[T]) []T {
 	out := make([]T, len(in))
 	var i int

test/envparsing.sh

@@ -23,7 +23,6 @@ EXPECT=$(cat << "EOF"
     "application-name": "gts",
     "bind-address": "127.0.0.1",
     "cache": {
-        "account-ids-following-tag-mem-ratio": 1,
         "account-mem-ratio": 5,
         "account-note-mem-ratio": 1,
         "account-settings-mem-ratio": 0.1,
@@ -44,11 +43,13 @@ EXPECT=$(cat << "EOF"
         "follow-mem-ratio": 2,
         "follow-request-ids-mem-ratio": 2,
         "follow-request-mem-ratio": 2,
+        "following-tag-ids-mem-ratio": 2,
         "in-reply-to-ids-mem-ratio": 3,
         "instance-mem-ratio": 1,
         "interaction-request-mem-ratio": 1,
-        "list-entry-mem-ratio": 2,
+        "list-ids-mem-ratio": 2,
         "list-mem-ratio": 1,
+        "listed-ids-mem-ratio": 2,
         "marker-mem-ratio": 0.5,
         "media-mem-ratio": 4,
         "memory-target": 104857600,
@@ -65,7 +66,6 @@ EXPECT=$(cat << "EOF"
         "status-fave-ids-mem-ratio": 3,
         "status-fave-mem-ratio": 2,
         "status-mem-ratio": 5,
-        "tag-ids-followed-by-account-mem-ratio": 1,
         "tag-mem-ratio": 2,
         "thread-mute-mem-ratio": 0.2,
         "token-mem-ratio": 0.75,

vendor/codeberg.org/gruf/go-structr/cache.go

@@ -375,6 +375,11 @@ func (c *Cache[T]) Load(index *Index, keys []Key, load func([]Key) ([]T, error))
 	// the lock.
 	unlock()
 
+	if len(keys) == 0 {
+		// We loaded everything!
+		return values, nil
+	}
+
 	// Load uncached values.
 	uncached, err := load(keys)
 	if err != nil {

vendor/codeberg.org/gruf/go-structr/item.go

@@ -41,7 +41,6 @@ func free_indexed_item(item *indexed_item) {
 }
 
 // drop_index will drop the given index entry from item's indexed.
-// note this also handles freeing the index_entry memory (e.g. to pool)
 func (i *indexed_item) drop_index(entry *index_entry) {
 	for x := 0; x < len(i.indexed); x++ {
 		if i.indexed[x] != entry {

vendor/codeberg.org/gruf/go-structr/runtime.go

@@ -152,8 +152,10 @@ func extract_fields(ptr unsafe.Pointer, fields []struct_field) []unsafe.Pointer
 			fptr = field.zero
 		}
 
+		// Set field ptr.
 		ptrs[i] = fptr
 	}
+
 	return ptrs
 }
 

vendor/modules.txt

@@ -75,7 +75,7 @@ codeberg.org/gruf/go-storage/disk
 codeberg.org/gruf/go-storage/internal
 codeberg.org/gruf/go-storage/memory
 codeberg.org/gruf/go-storage/s3
-# codeberg.org/gruf/go-structr v0.8.8
+# codeberg.org/gruf/go-structr v0.8.9
 ## explicit; go 1.21
 codeberg.org/gruf/go-structr
 # codeberg.org/superseriousbusiness/exif-terminator v0.9.0