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Articles tagged with #backend
Every time your phone opens Instagram, checks the weather, or processes a payment — an API is working behind the scenes. The front end asks for something, the server responds with data, and the UI ren
Every technology makes a bet. Node.js's bet was this: most web applications aren't slow because they do too much computation. They're slow because they spend most of their time waiting — waiting for a database to respond, waiting for a file to load, waiting for an external API to return. If you build a runtime optimised around that specific reality, you get something genuinely fast for the work most web apps actually do.
Accepting a text field in an Express form is straightforward — req.body.email and you're done. But the moment a user uploads a file, everything changes. The data arriving at your server is no longer s
A clear, practical guide to building your first Express server — from zero to handling real requests.
If you've ever built a Node.js app and thought, "How do I know who is calling my API?" — you've stumbled upon authentication. Today, we’re going to break down JWT authentication in plain English. No c
Most developers, when they first hear "Node.js is single-threaded," assume that means it can only handle one request at a time. That sounds like a terrible idea for a web server. If user A makes a req
