Understanding the Node.js Event Loop

Understanding the Node.js Event Loop

This article helps you to understand how the Node.js event loop works, and how you can leverage it to build fast applications. We’ll also discuss the most common problems you might encounter, and the solutions for them.

Good article that describes how Node.js handles asynchronous operations including geting into microtasks and macrotasks as well as how they relate to the more common promise, process.nextTick(), and setTimeout() calls relate.