Improve database concurrency

games/apps.py

@@ -26,6 +26,7 @@ def schedule_tasks(sender, **kwargs):
             name="Update converted prices",
             schedule_type=Schedule.MINUTES,
             next_run=now() + timedelta(seconds=30),
+            catchup=False,
         )
 
     if not Schedule.objects.filter(name="Update price per game").exists():
@@ -34,6 +35,7 @@ def schedule_tasks(sender, **kwargs):
             name="Update price per game",
             schedule_type=Schedule.MINUTES,
             next_run=now() + timedelta(seconds=30),
+            catchup=False,
         )
 
     from games.models import ExchangeRate

timetracker/settings.py

@@ -113,6 +113,10 @@ DATABASES = {
     "default": {
         "ENGINE": "django.db.backends.sqlite3",
         "NAME": BASE_DIR / "db.sqlite3",
+        "OPTIONS": {
+            "timeout": 20,
+            "init_command": "PRAGMA synchronous=NORMAL; PRAGMA journal_mode=WAL;",
+        },
     }
 }