diff --git a/archivebox/core/settings.py b/archivebox/core/settings.py
index e92787ea..9a5700fc 100644
--- a/archivebox/core/settings.py
+++ b/archivebox/core/settings.py
@@ -123,10 +123,17 @@ DATABASES = {
     'default': {
         'ENGINE': 'django.db.backends.sqlite3',
         'NAME': DATABASE_NAME,
-        # modified to be in-memory or sqlite3+wal by setup_django() in config.py
+        # DB setup is sometimes modified at runtime by setup_django() in config.py
     }
 }
 
+# CACHES = {
+#     'default': {
+#         'BACKEND': 'django.core.cache.backends.db.DatabaseCache',
+#         'LOCATION': 'cache_default',
+#     }
+# }
+
 EMAIL_BACKEND = 'django.core.mail.backends.console.EmailBackend'
 
 
@@ -148,6 +155,8 @@ SESSION_COOKIE_AGE = 1209600  # 2 weeks
 SESSION_EXPIRE_AT_BROWSER_CLOSE = False
 SESSION_SAVE_EVERY_REQUEST = True
 
+SESSION_ENGINE = "django.contrib.sessions.backends.db"
+
 AUTH_PASSWORD_VALIDATORS = [
     {'NAME': 'django.contrib.auth.password_validation.UserAttributeSimilarityValidator'},
     {'NAME': 'django.contrib.auth.password_validation.MinimumLengthValidator'},