Those are some amazing performance metrics! What's the catch? Is there a tradeoff or did you really find a 10x efficiency?
My guess is that I avoid calling Python as much as possible. Most of the parsing and the `start_response` code is all written in C instead of Python.
Flask applications seem to have some bottleneck. I don't see the same performance numbers as I do with the basic WSGI app.
*A note: Those tests are just "Hello World" tests on a single worker. They should be taken with a grain of salt...