update db pragma

src/lib/db.ts

@@ -12,7 +12,12 @@ export function getDb(): Database.Database {
   _db = new Database(DB_PATH)
   _db.pragma('journal_mode = WAL')
   _db.pragma('foreign_keys = ON')
+  _db.pragma('busy_timeout = 5000')
+  _db.pragma('synchronous = NORMAL')
+  _db.pragma('cache_size = -65536')
+  _db.pragma('wal_autocheckpoint = 1000')
   initDb(_db)
+  _db.pragma('wal_checkpoint(PASSIVE)')
   return _db
 }
 
@@ -113,6 +118,7 @@ function initDb(db: Database.Database): void {
   migrateComicsIndex(db)
   migrateTagMappingsIndexes(db)
   migrateUserRating(db)
+  migrateParentKeyItemTypeIndex(db)
   seedAppSettings(db)
 }
 
@@ -467,6 +473,13 @@ function migrateTagMappingsIndexes(db: Database.Database): void {
   `)
 }
 
+function migrateParentKeyItemTypeIndex(db: Database.Database): void {
+  db.exec(`
+    CREATE INDEX IF NOT EXISTS media_items_parent_key_type
+      ON media_items(parent_key, item_type);
+  `)
+}
+
 function migrateUserRating(db: Database.Database): void {
   const cols = db.pragma('table_info(media_items)') as { name: string }[]
   if (!cols.some((c) => c.name === 'user_rating')) {