📰 Dev.to · Pratham

A web dev student goes on a system investigation — and discovers that Linux's entire brain lives in...

Where do files go after you upload them, and how do you get them back? You've set up Multer....

How to accept profile pictures, documents, and any file your users throw at your server. The...

Three terms that get mixed up constantly — and a clear guide to what each one actually does. When...

How to design clean, predictable APIs that any developer can understand in 5 seconds. Before I...

The checkpoint system between request and response — where logging, authentication, and validation...

Two ways to pass data through URLs — and knowing when to use each one. When I first started...

How Express turns Node.js from "I can build a server" to "I can build a server in 5 minutes." In...

From zero to "Hello World" server — no frameworks, no magic, just pure Node.js. There's a special...

The two patterns that make Node.js non-blocking — and how one evolved from the other. Every...

The difference between a server that freezes under load and one that handles thousands of users...

One chef, one kitchen, a hundred orders — and nobody's food is late. If I told you a restaurant...

The invisible task manager that makes single-threaded JavaScript handle thousands of...

How one thread, a smart event loop, and non-blocking I/O let Node.js handle thousands of requests...

How one runtime changed everything — and made JavaScript a full-stack language. For the longest...

How to write code that breaks gracefully instead of crashing spectacularly. Here's what happens...

Asynchronous code that reads like synchronous code — because sometimes the best upgrade is better...

Functions that call other functions — and why that's the foundation of everything async. Here's...

How JavaScript creates objects from blueprints — and what actually happens behind the scenes. At...

How to take control of this — and borrow functions like a pro. In a previous article, I covered...

Same three dots, two completely different jobs. JavaScript has this funny thing where the exact...

The data structure that mirrors the real world — and the backbone of nearly everything in JS. In...

How your code makes decisions — and how you can tell it exactly what to do. Here's something that...

You've used git commit hundreds of times. But do you know what actually happens when you run...