In the past, when I needed websockets in a Flask app I used Faye (backed by Redis) for the websocket back-end. It was really easy to set up with Docker as it j

In the past, when I needed websockets in a Flask app I used Faye (backed by Redis) for the websocket back-end. It was really easy to set up with Docker as it just becomes another container in your Compose file. Nowadays I would just use Pusher.