How does Django channels work?

Channels preserve the synchronous behavior of Django and add a layer of asynchronous protocols allowing users to write the views that are entirely synchronous, asynchronous, or a mixture of both . Channels basically allow the application to support “long-running connections”.13 Nis 2021

With WebSockets (via Django Channels) managing the communication between the client and the server, whenever a user is authenticated, an event will be broadcasted to every other connected user . Each user’s screen will change automatically, without them having to reload their browsers.

To begin with, channels is nothing but an asynchronous task queue. It’s very similar to celery, the major difference being in performance & reliability. Channels is faster than celery but celery is more reliable.