When I first started working with Node.js, one thing didn’t sit right with me:

How can a single-threaded system handle thousands of requests at the same time?

It sounds contradictory. But once I understood the event loop properly (especially from the official docs), everything clicked. This blog is my attempt to explain it in the simplest way possible, without losing depth.

What “Single-Threaded” Actually Means

Node.js is often called single-threaded, but that statement is incomplete.