While gunicorn isn't necessarily the fastest according to Nicholas Piël's tests, I like it for its ease of use. It is very simple to get up and running and has

While gunicorn isn't necessarily the fastest according to Nicholas Piël's tests, I like it for its ease of use. It is very simple to get up and running and has some features like the ability to ratchet up and down the number of worker processes on the fly, or automatically reload them. When gunicorn's performance becomes a problem, I will re-evaulate and consider something like gevent.