---
title: "Comment by Franck Ardisson on \"Why Your Node.js App Freezes (And How Worker Threads Can Save You)\" | Hashnode"
description: "I remember the first time this happened to me—a CPU-heavy CSV export task brought my entire Express server to its knees. Worker threads aren't just for performa"
url: "https://hashnode.com/posts/why-your-nodejs-app-freezes-and-how-worker-threads-can-save-you/68018214a7e17df949bc335d/comment/69f88cc23f88f98bd28c7956"
---

[Discussion](https://hashnode.com/posts/why-your-nodejs-app-freezes-and-how-worker-threads-can-save-you/68018214a7e17df949bc335d)

Comment [Why Your Node.js App Freezes (And How Worker Threads Can Save You)](https://hashnode.com/posts/why-your-nodejs-app-freezes-and-how-worker-threads-can-save-you/68018214a7e17df949bc335d)

[Franck Ardisson](https://hashnode.com/@franckkk)

[May 4](https://hashnode.com/posts/why-your-nodejs-app-freezes-and-how-worker-threads-can-save-you/68018214a7e17df949bc335d/comment/69f88cc23f88f98bd28c7956)

I remember the first time this happened to me—a CPU-heavy CSV export task brought my entire Express server to its knees. Worker threads aren't just for performance; they're about keeping your users from experiencing that jarring frozen UI moment.