🚀 Backend Internals #6: The Node.js Event Loop Explained — Why Async Code Doesn't Block

By Krati Joshi

If you've ever wondered how Node.js can handle thousands of requests while running on a single JavaScript thread, the answer is the Event Loop.

Many developers know what the Event Loop is, but understanding how it works can completely change the way you write and debug asynchronous code.

Let's break it down.

JavaScript is single-threaded, which means it can execute only one task at a time.