The Node.js Event Loop Explained

<p>JavaScript is often called <strong>single-threaded</strong>.</p> <p>That means it has one main thread and can execute <strong>one piece of JavaScript at a time</strong>.</p>

<h1> The Event Loop, Microtasks, Macrotasks and Output Prediction </h1> <blockquote> <p>The single most asked JavaScript question at Google, Meta, and every senior frontend

<p>Lately, I have been diving deep into the core architecture of Node.js. Like many developers, I spent months building servers, handling routes, and streaming responses with

<blockquote> <p><em>"Blocking code makes your server wait. Non-blocking code makes your server work while it waits."</em></p> </blockquote> <h2> Introduction </h2> <p>You've heard

<blockquote> <p>This article was originally published on <a href="https://maoxunxing.com/node-event-loop-cpu-spike/" rel="noopener noreferrer">maoxunxing.com</a>. Follow me there

<blockquote> <p>This is Part 1 of a 3-part series where an uncle (30 years in backend systems, still uses a wired mouse) explains Node.js internals to his nephew (2nd year into

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<h1> Worker Threads in Node.js: When and How to Use Them </h1> <p>Your API hashes a password. The event loop blocks. Every other request waits. Node is single-threaded, but it