What is kafka used for ? I can replace channels[daphne] with Kafka ?
I mainly want a user notification system.
Kafka is a message broker.
Conceptually, it would be roughly equivalent to Redis in the Channels environment. This means that it is not designed to be a websocket endpoint, but there is a plugin to allow it to do that.
However, that still doesn’t provide the integration with your Django environment.
So yes, you could set up a kafka server that the browsers connect to, and then write a Django/Kafka interface in Django for Django to send messages to it. Then you would still need Daphne/uvicorn to run an async listener process to be able to receive messages back - unless you wanted to create a kafka plugin to send to a REST-style api.
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