Unlocking ASGI Innovations

How FastAPI Reaps the Benefits

The Speaker

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Marcelo Trylesinski

OSS Maintainer

### Uvicorn ![w:450](https://raw.githubusercontent.com/tomchristie/uvicorn/master/docs/uvicorn.png)

### Starlette ![w:600](https://raw.githubusercontent.com/koddr/starlette-logo/master/src/dark/svg/starlette__full_logo__with_text__dark.svg)

What is ASGI?

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What is ASGI?

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Why FastAPI follows ASGI?

WebSocket Denial Response

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WebSocket Denial Response

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WebSocket Denial Response

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WebSocket Denial Response

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HTTP Trailers

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HTTP Trailers

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HTTP Trailers

What about FastAPI?

HTTP Trailers

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HTTP Trailers

Open Source!

Client Disconnection

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Client Disconnection

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Client Disconnection

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Client Disconnection

Uvicorn raises OSError on... WebSockets!

Client Disconnection

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Client Disconnection

Next steps...

Conclusion

Bonus: FastAPI Tips

https://github.com/Kludex/fastapi-tips

Try Logfire (PYCONPT2024)! 🚀

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Thank You!

marcelotryle.com

Marcelo Trylesinski @marcelotryle Kludex