Worker Threads in Node.js: The Secret to High-Performance Backends 🔥

Node.js is famously single-threaded—but when you hit CPU-heavy operations like encryption, data processing, or image resizing, your app can grind to a halt. That’s where Worker Threads come in. In this video, we unpack how Worker Threads unlock true parallelism in JavaScript, helping you offload heavy logic without blocking the event loop. We’ll break down Libuv, explain the difference between I/O and CPU-bound tasks, and walk through a real-world code example showing how to use worker threads for maximum performance. If you're building high-performance apps in Node, this one’s for you! https://www.linkedin.com/in/bytemonk/ ⏳ Timestamps 00:00 – Intro: Why Worker Threads Matter in Node.js 00:57 – The Problem: CPU-Heavy Tasks Block the Event Loop 01:44 – Libuv Explained – Node’s Hidden Thread Pool 03:17 – Async/Await & Non-blocking I/O in Action 05:01 – The Bottleneck: Why Libuv Threads Can’t Run JS 05:44 – Enter Worker Threads – True JavaScript Parallelism 07:19 – Real Code Example: Using Worker Threads for Heavy Tasks https://www.youtube.com/playlist?list=PLJq-63ZRPdBt423WbyAD1YZO0Ljo1pzvY https://www.youtube.com/playlist?list=PLJq-63ZRPdBssWTtcUlbngD_O5HaxXu6k https://www.youtube.com/playlist?list=PLJq-63ZRPdBu38EjXRXzyPat3sYMHbIWU https://www.youtube.com/playlist?list=PLJq-63ZRPdBuo5zjv9bPNLIks4tfd0Pui https://www.youtube.com/playlist?list=PLJq-63ZRPdBsPWE24vdpmgeRFMRQyjvvj https://www.youtube.com/playlist?list=PLJq-63ZRPdBslxJd-ZT12BNBDqGZgFo58 AWS Certification: AWS Certified Cloud Practioner: https://youtu.be/wF1pldkQrOY AWS Certified Solution Architect Associate: https://youtu.be/GzomXNLFgkk AWS Certified Solution Architect Professional: https://youtu.be/KFZrBxSA9tI #nodejs #javascript #multithread #singlethread