Today I stumbled across Spawning, a high-performance WSGI server written by Donovan Preston. It's based on eventlet, which is a coroutine-based server framework for Python.

Initial reports deploying a Django application behind it appear promising, so I decided to give it a try.

For Pylons, the configuration required only a couple of changes to the Paste .ini file:

[server:main]
use = egg:Spawning
num_processes = 2
host = 127.0.0.1
port = 8000

I've deployed it on both this blog and on the Breve site. I'm planning on getting a proper benchmarking environment up later tonight so I can compare it to Paste#http.