---
title: "Discussion on \"Why Your FastAPI App Works Locally But Fails in Production\" | Hashnode"
description: "Discussion on \"Why Your FastAPI App Works Locally But Fails in Production\". our FastAPI app works locally but crashes in production? Learn the 5 top reasons: Uvicorn managers, QueuePool limits, Event Loop blocking, and Docker CPU"
url: "https://hashnode.com/posts/why-your-fastapi-app-works-locally-but-fails-in-p/6990b6657455ad1f34ebce43"
---

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# [Why Your FastAPI App Works Locally But Fails in Production](https://www.logiclooptech.dev/why-your-fastapi-app-works-locally-but-fails-in-p?utm_source=hashnode&utm_medium=feed)

our FastAPI app works locally but crashes in production? Learn the 5 top reasons: Uvicorn managers, QueuePool limits, Event Loop blocking, and Docker CPU

Feb 14 · 4 min read · logiclooptech.dev  
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-   [#fastapi](https://hashnode.com/tag/fastapi)
-   [#production](https://hashnode.com/tag/production)
-   [#backend](https://hashnode.com/tag/backend)
-   [#software-development](https://hashnode.com/tag/software-development)

## Written by

[Ayush Kaushik](https://hashnode.com/@LogicLoop)

@LogicLoop · India

  
[View profile](https://hashnode.com/@LogicLoop)

The feedback loop between Data and Code.

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