Use an ASGI application, rather than WSGI

- ASGI should be the preferred application, as our codebase runs a lot of async code

src/khoj/app/asgi.py

@@ -0,0 +1,16 @@
+"""
+ASGI config for app project.
+
+It exposes the ASGI callable as a module-level variable named ``application``.
+
+For more information on this file, see
+https://docs.djangoproject.com/en/4.2/howto/deployment/asgi/
+"""
+
+import os
+
+from django.core.asgi import get_asgi_application
+
+os.environ.setdefault("DJANGO_SETTINGS_MODULE", "khoj.app.settings")
+
+application = get_asgi_application()

src/khoj/app/settings.py

@@ -108,7 +108,7 @@ TEMPLATES = [
     },
 ]
 
-WSGI_APPLICATION = "app.wsgi.application"
+ASGI_APPLICATION = "app.asgi.application"
 
 # Database
 # https://docs.djangoproject.com/en/4.2/ref/settings/#databases

src/khoj/app/wsgi.py

@@ -1,16 +0,0 @@
-"""
-WSGI config for app project.
-
-It exposes the WSGI callable as a module-level variable named ``application``.
-
-For more information on this file, see
-https://docs.djangoproject.com/en/4.2/howto/deployment/wsgi/
-"""
-
-import os
-
-from django.core.wsgi import get_wsgi_application
-
-os.environ.setdefault("DJANGO_SETTINGS_MODULE", "khoj.app.settings")
-
-application = get_wsgi_application()

src/khoj/configure.py

@@ -328,7 +328,7 @@ def update_content_index_regularly():
     )
 
 
-@schedule.repeat(schedule.every(1).to(2).hours)
+@schedule.repeat(schedule.every(30).to(59).minutes)
 def close_all_db_connections():
     from django import db