Chetan Chauhan

@Chetan71

Building products with passion

Delhi, IndiaJoined January 2026

About

Software developer passionate about building scalable web applications with React and backend technologies. I enjoy solving problems, building projects, and sharing my learning with the community.

Available for

Backend Development roles and discussion on tech

Chetan Chauhan's blogs

Chetan Chauhan | Tech Blog | chetan71chetan71.hashnode.dev41 posts

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Recently published

CCChetan Chauhanchetan71.hashnode.devMay 10 · 14 min read

REST API Design Made Simple with Express.js

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

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CCChetan Chauhanchetan71.hashnode.devMay 9 · 12 min read

The Node.js Event Loop Explained

Table of Contents What the Event Loop Is Why Node.js Needs an Event Loop The Call Stack and Task Queue How Async Operations Are Handled Timers vs I/O Callbacks The Event Loop and Scalability

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CCChetan Chauhanchetan71.hashnode.devMay 9 · 11 min read

Why Node.js is Perfect for Building Fast Web Applications

That bet turned out to be correct. This post isn't about how Node.js works internally — that's a separate topic. This is about when Node.js is the right architectural choice, what kinds of problems it

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CCChetan Chauhanchetan71.hashnode.devMay 9 · 11 min read

Map and Set in JavaScript

Table of Contents What Is a Map? What Is a Set? Map vs Object — The Real Differences Set vs Array — The Real Differences When to Use Map and Set 1. What Is a Map? A Map is a collection of key-

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CCChetan Chauhanchetan71.hashnode.devMay 9 · 13 min read

Async/Await in JavaScript: Writing Cleaner Asynchronous Code

async/await was introduced in ES2017 to solve those remaining friction points. It doesn't replace promises. It's built directly on top of them. What it changes is how you write and read asynchronous c

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Chetan Chauhan

About

Available for

Chetan Chauhan's blogs

Recently published

REST API Design Made Simple with Express.js

The Node.js Event Loop Explained

Why Node.js is Perfect for Building Fast Web Applications

Map and Set in JavaScript

Async/Await in JavaScript: Writing Cleaner Asynchronous Code

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Chetan Chauhan

About

Available for

Chetan Chauhan's blogs

Recently published

REST API Design Made Simple with Express.js

The Node.js Event Loop Explained

Why Node.js is Perfect for Building Fast Web Applications

Map and Set in JavaScript

Async/Await in JavaScript: Writing Cleaner Asynchronous Code