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 trip you up. This one doesn't.
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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 prompts, and published the whole thing to npm.
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 changed: forking workers with the cluster module, wiring up zero-downtime restarts, managing worker lifecycles, handling sticky sessions, and running it all through PM2 in production.
Node.js
Understanding 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 Buffer.from() and friends, a lot of Node's I/O behavior starts to make sense. Here's what I wish someone had told me earlier.
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 tradeoffs I had to learn the hard way.
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, execution order, why next() trips everyone up, async error handling, and the patterns we actually use in production.