The way it's typically done is that the worker process reports back its progress to the job metadata on the queue, and the web worker polls the job metadata to read the progress. I've implemented this for progress bars many times on Django with django-rq.

I first learned about it from Miguel Grinberg's Flask tutorial: https://blog.miguelgrinberg.com/post/the-flask-mega-tutorial... But the same concept applies to Django.