add redis dependency back in for caching

passbook/core/requirements.txt

@@ -1,12 +1,13 @@
-django>=2.0
-django-model-utils
+celery
+cherrypy
+colorlog
 django-ipware
+django-model-utils
+django-redis
+django>=2.0
 djangorestframework
+idna<2.8,>=2.5
+markdown
+psycopg2
 PyYAML
 raven
-markdown
-colorlog
-celery
-psycopg2
-idna<2.8,>=2.5
-cherrypy

passbook/core/settings.py

@@ -45,6 +45,8 @@ AUTH_USER_MODEL = 'passbook_core.User'
 
 CSRF_COOKIE_NAME = 'passbook_csrf'
 SESSION_COOKIE_NAME = 'passbook_session'
+SESSION_ENGINE = "django.contrib.sessions.backends.cache"
+SESSION_CACHE_ALIAS = "default"
 LANGUAGE_COOKIE_NAME = 'passbook_language'
 
 AUTHENTICATION_BACKENDS = [
@@ -99,6 +101,16 @@ REST_FRAMEWORK = {
     ]
 }
 
+CACHES = {
+    "default": {
+        "BACKEND": "django_redis.cache.RedisCache",
+        "LOCATION": "redis://%s" % CONFIG.get('redis'),
+        "OPTIONS": {
+            "CLIENT_CLASS": "django_redis.client.DefaultClient",
+        }
+    }
+}
+
 MIDDLEWARE = [
     'django.middleware.security.SecurityMiddleware',
     'django.contrib.sessions.middleware.SessionMiddleware',