DB Optimizations (#6712)

* Enable auto vacuums

* Enable auto vacuum

* Fix separator

* Fix separator and remove incorrect log

* Limit to 1 row since that is all that is used

* Add index on camera + segment_size

* Formatting

* Increase timeout and cache_size

* Set DB mode to NORMAL synchronous level

* Formatting

* Vacuum every 2 weeks

* Remove fstring

* Use string

* Use consts

frigate/record/record.py

@@ -37,7 +37,15 @@ def manage_recordings(
     setproctitle("frigate.recording_manager")
     listen()
 
-    db = SqliteQueueDatabase(config.database.path)
+    db = SqliteQueueDatabase(
+        config.database.path,
+        pragmas={
+            "auto_vacuum": "FULL",  # Does not defragment database
+            "cache_size": -512 * 1000,  # 512MB of cache
+            "synchronous": "NORMAL",  # Safe when using WAL https://www.sqlite.org/pragma.html#pragma_synchronous
+        },
+        timeout=60,
+    )
     models = [Event, Recordings, Timeline]
     db.bind(models)
 
@@ -48,5 +56,3 @@ def manage_recordings(
 
     cleanup = RecordingCleanup(config, stop_event)
     cleanup.start()
-
-    logger.info("recording_manager: exiting subprocess")