FastWSGI, an ultra-fast WSGI server for Python

In plain words

FastWSGI is a WSGI server designed for Python web applications. It focuses on high performance and speed compared to traditional Python application servers. The tool is intended for developers building Python web applications who need efficient request handling. It was released in December 2021 and is available on GitHub for open-source use.

written from the facts on this page · September 2026

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  A few months ago, I benchmarked FastAPI on an i9 MacBook Pro. I couldn't believe my eyes. A primary REST endpoint to `sum` two integers took 6 milliseconds to evaluate. It is okay if you are targeting a server in another city, but it should be less when your client and server apps are running on the same machine. FastAPI would have bottleneck-ed the inference of our lightweight UForm neural networks recently trending on HN under the title "Beating OpenAI CLIP with 100x less data and compute". (Thank you all for the kind words!) So I wrote another library. It has been a while since I have…

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