I've heard of these three giant technologies would allow developers to build pub/sub paradigm which result in rapid server push experience.
I've got background on Django, but non of the other two. So just wondering, where can I kick off?
I currently use Gunicorn as django server, uses Nginx as a proxy to serve static files, uses Haproxy as a front-end load balancer. After I adopt new technology stack, can I keep them still?