Stop Using Uvicorn: Granian Is the Fastest Python ASGI Server Right Now
Boost Python API performance instantly with Granian. Learn how to run FastAPI and Flask faster with this high-performance ASGI server and simple setup guide.
Speed really matters when you’re building Python backends, and that’s where Granian starts to stand out.
Granian is a fast ASGI server written in Rust that’s built to run Python web apps with less overhead and better performance.
If you’ve used Uvicorn or Gunicorn before, you can think of Granian as a step up. It feels familiar, but once you run it, you can tell it’s doing things more efficiently.
The easiest way to think about it is as a performance upgrade you can drop right into your stack. You don’t have to change your app.
You just swap the server, and your app can handle requests and concurrency in a much smoother way. It makes better use of your hardware without touching your Python code.
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Granian fits really well with how modern Python apps are built. Whether you’re using FastAPI, working with async code, or building APIs that need to scale, it gives you a more efficient engine underneath everything.
It handles connections cleanly, manages workers well, and helps avoid slowdowns that usually show up as your app grows.
You don’t need to rewrite anything. You don’t need to learn a new system. If you already understand ASGI, you’re already in a good spot.
In this article, I’ll walk you through a few useful things you can do with Granian that can improve how your backend runs. We’ll start a server, adjust workers for better performance, and look at how it handles async workloads.
What makes Granian stand out is that it stays focused on one thing. Running your Python app as fast and efficiently as possible. No extra layers. No complicated setup. Just solid performance with a clean developer experience.
Let’s start by installing Granian:
pip3 install granianFrom there, you can spin up your server and let Granian do the work.
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