Fixed issue of not connecting to redis instance and added caching for courses

stude/config/settings.py

@@ -261,11 +261,30 @@ LEAFLET_CONFIG = {
     'TILES': 'https://openstreetmap.keannu1.duckdns.org/tile/{z}/{x}/{y}.png'
 }
 
+REDIS_HOST = os.getenv('REDIS_HOST', 'localhost')
+REDIS_PORT = os.getenv('REDIS_PORT', 6379)
+
+
+# Django Redis Cache
+CACHES = {
+    "default": {
+        "BACKEND": "django_redis.cache.RedisCache",
+        "LOCATION": "redis://redis:6379/1",
+        "OPTIONS": {
+            "CLIENT_CLASS": "django_redis.client.DefaultClient",
+        }
+    }
+}
+
+SESSION_ENGINE = "django.contrib.sessions.backends.cache"
+SESSION_CACHE_ALIAS = "default"
+
+# Redis Cache for Django Channel Websockets
 CHANNEL_LAYERS = {
     "default": {
         "BACKEND": "channels_redis.core.RedisChannelLayer",
         "CONFIG": {
-            "hosts": [("127.0.0.1", 6379)],
+            "hosts": [("redis", 6379)],
         },
     },
 }