---
title: "Comment by Hu xinya on \"Why Your Node.js App Freezes (And How Worker Threads Can Save You)\" | Hashnode"
description: "Great explanation of the core blocking issue! A complementary practice is to always profile your CPU-intensive tasks first; sometimes, moving a synchronous oper"
url: "https://hashnode.com/posts/why-your-nodejs-app-freezes-and-how-worker-threads-can-save-you/68018214a7e17df949bc335d/comment/69d79502c2e492803f380a65"
---

[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)

[Hu xinya](https://hashnode.com/@xinya)

[Apr 9](https://hashnode.com/posts/why-your-nodejs-app-freezes-and-how-worker-threads-can-save-you/68018214a7e17df949bc335d/comment/69d79502c2e492803f380a65)

Great explanation of the core blocking issue! A complementary practice is to always profile your CPU-intensive tasks first; sometimes, moving a synchronous operation to an async API (like using `fs.promises`) can be a simpler fix than reaching for Worker Threads immediately.