> Flask/Python blows Node out of the water where performance is concerned. That shouldn't be a surprise to anyone.

I'm a huge fan of Flask and Python in general, and despise server-side Javascript (or Javascript anything, really). But I'm curious how you can make this claim. CPython lacks JIT, and gunicorn + Flask is going to run a process pool by default, with each process being single threaded and under GIL.

What's your set up then? PyPy and gevent gunicorn workers? Otherwise I don't see how CPython+Flask+gunicorn could beat Node performance wise out of the box. At best PyPy + gevent would approximate NodeJS performance, unless you can tell me otherwise.