---
title: "Discussion on \"What is Middleware in Express and How It Works\" | Hashnode"
description: "Discussion on \"What is Middleware in Express and How It Works\". Introduction\nMiddleware is one of the most important concepts in Express.js.It acts like a checkpoint system between the incoming request and the final response.\nWhenever a client sends a request to a"
url: "https://hashnode.com/posts/what-is-middleware-in-express-and-how-it-works/6a00b207e3eebc2e20a0b560"
---

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# [What is Middleware in Express and How It Works](https://sharmadipali14.hashnode.dev/what-is-middleware-in-express-and-how-it-works?utm_source=hashnode&utm_medium=feed)

Introduction Middleware is one of the most important concepts in Express.js.It acts like a checkpoint system between the incoming request and the final response. Whenever a client sends a request to a

May 10 · 5 min read · sharmadipali14.hashnode.dev  
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-   [#javascript](https://hashnode.com/tag/javascript)
-   [#middleware](https://hashnode.com/tag/middleware)
-   [#express](https://hashnode.com/tag/express)
-   [#chaicode](https://hashnode.com/tag/chaicode)
-   [#cohort2026](https://hashnode.com/tag/cohort2026)

## Written by

[Dipali Sharma](https://hashnode.com/@sharmadipalidev)

@sharmadipalidev

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

Hello, I am Dipali. Currently a student at ChaiCode | Full Stack Developer

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