Beating FastAPI

Wed, 15 Jul 2026 00:00:00 +0000

One thing which Go does a lot better than Python is single binary deployments. As an experiment I thought, why not have a way to package up Go as part of a Python package, similar to maturin - and also have a way to spin up a Python webserver that is packaged as a Go binary.

The results were definitely interesting:

Go binary had 9x more throughput than stdlib Python’s http library, and ~5x more throughput than FastAPI
Idle memroy usage was `3x higher for FastAPI, and the peak memory usage was ~2x higher than Go binary

Of course the pocket python restriction may be too much for more complex applications.

Performance on NoRaincheck

Beating FastAPI