Express.js
Express.js Middleware Patterns You Should Know
Middleware is how Express works. Not just a feature of it -- it is the whole thing. This is the talk I give to every new hire: the five middleware types...
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Node.js
Node.js Child Processes: spawn, exec, and fork Explained
Sometimes Node needs to shell out to run ffmpeg, a Python script, or a system command. The child_process module gives you four ways to do it, and each has...
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Node.js
Buffer and Binary Data in Node.js
Buffers tripped me up for a while. They're how Node handles raw binary data outside the V8 heap, and once you actually understand what's happening with...
Node.js
Node.js Cluster Module for High Availability
Our API went down on a Saturday because we were running a single Node process on a single core with no recovery plan. This post walks through what we...
Node.js
Building a CLI Tool with Node.js
I got tired of repeating the same terminal commands, so I built a CLI tool with Node.js over a weekend. Here's how I set up argument parsing, interactive...
Node.js
Node.js Streams: The Complete Guide
Streams are the reason Node.js can handle giant files without running out of memory. Most tutorials explain the theory and skip the parts that actually...