1 files changed, 28 insertions, 0 deletions
diff --git a/internal/cache/db.go b/internal/cache/db.go
index 16e1d286a..c1b87ef96 100644
--- a/internal/cache/db.go
+++ b/internal/cache/db.go
@@ -29,6 +29,9 @@ 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]
 
@@ -160,6 +163,9 @@ 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]
 
@@ -234,6 +240,17 @@ 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(
@@ -1317,6 +1334,17 @@ 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.