@bhargavaram

REST API Design Made Simple with Express.js

6d ago · 12 min read · Every application you use daily is talking to a server somewhere. When you open Instagram, your phone asks a server for your feed. When you place an order on Swiggy, your app sends your order details

How Node.js Handles Multiple Requests with a Single Thread: Concurrency Without Parallelism

6d ago · 10 min read · If you have read the previous blogs on blocking vs non-blocking code and the event loop, you already have the two most important building blocks for understanding this topic. Now it is time to bring e

What is Middleware in Express and How It Works ?

May 5 · 10 min read · You have been writing Express routes for a while now. Request comes in, your handler runs, response goes out. That flow feels natural. But then you start noticing patterns across your routes. Every pr

Handling File Uploads in Express with Multer

May 5 · 10 min read · You have built POST endpoints before. JSON comes in, you read req.body, you do something with it, you send a response. Clean and straightforward. Then someone asks you to add a profile picture upload.

URL Parameters vs Query Strings in Express.js

May 5 · 8 min read · You are writing Express routes. GET requests, dynamic URLs, filtering data — all of it feels straightforward until you look at a real API and see two different things happening in the URL. /users/42 /