---
title: "Discussion on \"Node.js Under the Hood: Why It Is Fast and When It Is Not\" | Hashnode"
description: "Discussion on \"Node.js Under the Hood: Why It Is Fast and When It Is Not\". Think one thread is a bottleneck? Learn how the event loop and non-blocking I/O make Node.js faster than multi-threaded servers for modern web apps."
url: "https://hashnode.com/posts/node-js-under-the-hood-why-it-is-fast-and-when-it-is-not/69fc6d973d9a9c1019a26d9b"
---

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Discussion

# [Node.js Under the Hood: Why It Is Fast and When It Is Not](https://blog.saumyagrawal.in/node-js-under-the-hood-why-it-is-fast-and-when-it-is-not?utm_source=hashnode&utm_medium=feed)

Think one thread is a bottleneck? Learn how the event loop and non-blocking I/O make Node.js faster than multi-threaded servers for modern web apps.

May 7 · 11 min read · blog.saumyagrawal.in  
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-   [#javascript](https://hashnode.com/tag/javascript)
-   [#nodejs](https://hashnode.com/tag/nodejs)

## Written by

[Saumya](https://hashnode.com/@saumyaetc)

@saumyaetc · Lucknow

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

Refactoring to Software Development

Trying to transition my career to explore new things, new tech

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