feat: support for Redis sentinel (#1301)

closes: #925

.env.example

@@ -22,6 +22,11 @@ REDIS_URL=redis://redis:6379
 # which will be the password for the redis service running inside the docker-compose
 # to make it secure
 REDIS_PASSWORD=
+# Redis Sentinel can be used by passing list of sentinel host and ports e,g. sentinel_host1:port1,sentinel_host2:port2
+REDIS_SENTINELS=
+# Redis sentinel master name is required when using sentinel, default value is "mymaster".
+# You can find list of master using "SENTINEL masters" command
+REDIS_SENTINEL_MASTER_NAME=
 
 # Postgres Database config variables
 POSTGRES_HOST=postgres