[postpawl]

You looked into using gevent workers? Sometimes you need to make tweaks to C-based dependencies to make them not block the event loop, but it should work fine for doing a lot of concurrency without a bunch of rewriting. Usually your bottleneck is your database anyway.

[avinassh]

How does gevent actually works? It takes care of scheduling and polling?

[ghostwriter]

it uses non-blocking sockets and libev interface to propagate events from the kernel https://sdiehl.github.io/gevent-tutorial/#greenlets