use celery for asynchronous tasks, rename session_uuid -> file_uuid

api/backend/__init__.py

@@ -1 +1,3 @@
-from celery_app import app as celery
+from .celery import app as celery_app
+
+__all__ = ('celery_app',)

api/backend/celery.py

@@ -0,0 +1,9 @@
+import os
+from celery import Celery
+
+os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'backend.settings')
+
+app = Celery('backend')
+# Load config from Django settings, using a `CELERY_` prefix
+app.config_from_object('django.conf:settings', namespace='CELERY')
+app.autodiscover_tasks()

api/backend/settings.py

@@ -123,6 +123,10 @@ STATIC_URL = 'static/'
 # https://docs.djangoproject.com/en/5.1/ref/settings/#default-auto-field
 
 DEFAULT_AUTO_FIELD = 'django.db.models.BigAutoField'
+
+# COnfigure Redis as message broker
 CELERY_BROKER_URL = 'redis://localhost:6379/0'
 CELERY_ACCEPT_CONTENT = ['json']
 CELERY_TASK_SERIALIZER = 'json'
+CELERY_BROKER_CONNECTION_RETRY_ON_STARTUP = True
+