flask-socketio-celery-example | Example based on Miguel Grinberg | Platform As A Service library

I am trying to develop a web application that supports a long task at the backend. I am using flask-socketio package on my server along with celery. My workflow is following :

1. When a client opens the Html page -- I initiate a socket connection to the server which creates a uid for the user and emits it back.
2. Now once the user posts a request for the long task -- I schedule it using celery and once finished I need to emit it to the user who posted the request. (I stored the relevant userid in post request)

I have looked at @Miguels's answer for 39423646/flask-socketio-emit-to-specific-user which creates a separate room for each user and then broadcasts the message on that room. But I wanted to ask if there is some other simpler way to do this since it seems inefficient or forced way to do this.

I also came across the nodejs solution (how-to-send-a-message-to-a-particular-client-with-socket-io) which I felt to be a more natural way to accomplish this. Is there a similar solution in python-socketio too?

Update: After some more search I came across the following solution on a github gist. According to this -- ** flash-socketIO already puts all clients in the separate room given by request.sid **.

I would still wish to discuss other ways to do this. Specifically if the site traffic is quite high -- wouldn't it lead to too many rooms?

Update (2): my current (working) server code which makes use of rooms. This is borrowed and modified from flask-SocketIO celery example