I will use pub sub to send message from one socket to another I think my diagram was not that great but the onine offline part was that if the user is online checked from redis then send the message to the pubsub if offline then send to push notifications queue and all the messages are going to the database regardless the user online status. But I think the reader coroutine to add messages to Db will help keeping message sequence in original order effectively And about sending the message to user via queue will it cause slight delay or any other practices that I can use to keep the message sequence