Real-time Django with Channels

You are building a chat server to provide students with a chat room for each course. Students enrolled in a course will be able to access the course chat room and exchange messages. This functionality requires real-time communication between the server and the client.

A standard HTTP request/response model doesn’t work here because you need the browser to receive notifications as soon as new messages arrive. There are several ways you could implement this feature, using AJAX polling or long polling in combination with storing the messages in your database or Redis. However, there is no efficient way to implement real-time communication using a standard synchronous web application.

You need asynchronous communication, which allows real-time interactions, where the server can push updates to the client as soon as new messages arrive without the client needing to request updates periodically. Asynchronous communication also comes with other...