---
title: "karan hingrajiya (@karanHingrajiya) | Hashnode"
description: "Just a curious developer want to know every tech in depth. Read the latest articles by karan hingrajiya on Hashnode."
url: "https://hashnode.com/@karanHingrajiya"
---

@karanHingrajiya

# karan hingrajiya

@karanHingrajiya · India, Gujarat,surat · Joined January 2026

Just a curious developer want to know every tech in depth.

### [Async Code in Node.js: Callbacks and Promises](https://nodejs-behind-the-scene.hashnode.dev/async-code-in-node-js-callbacks-and-promises?utm_source=hashnode&utm_medium=feed)

A clear guide explaining why Node.js is asynchronous, how callbacks work and fail, and how promises simplify async code with file-reading demos.

8 min read · [nodejs-behind-the-scene.hashnode.dev](https://nodejs-behind-the-scene.hashnode.dev/async-code-in-node-js-callbacks-and-promises?utm_source=hashnode&utm_medium=feed)

[May 7](https://hashnode.com/posts/async-code-in-node-js-callbacks-and-promises/69fcd81f9f93a850a400c479)

### [How Node.js Handles Multiple Requests with a Single Thread](https://nodejs-behind-the-scene.hashnode.dev/how-node-js-handles-multiple-requests-with-a-single-thread?utm_source=hashnode&utm_medium=feed)

A clear, practical explanation of how Node.js uses the event loop and non-blocking I/O to manage thousands of concurrent requests on a single thread.

6 min read · [nodejs-behind-the-scene.hashnode.dev](https://nodejs-behind-the-scene.hashnode.dev/how-node-js-handles-multiple-requests-with-a-single-thread?utm_source=hashnode&utm_medium=feed)

[May 7](https://hashnode.com/posts/how-node-js-handles-multiple-requests-with-a-single-thread/69fcc7f79f93a850a4f462b4)

### [Why Node.js is Perfect for Building Fast Web Applications](https://nodejs-behind-the-scene.hashnode.dev/why-node-js-is-perfect-for-building-fast-web-applications?utm_source=hashnode&utm_medium=feed)

Explore how Node.js event-driven, non-blocking I/O and lightweight architecture powers responsive, high-concurrency web applications.

7 min read · [nodejs-behind-the-scene.hashnode.dev](https://nodejs-behind-the-scene.hashnode.dev/why-node-js-is-perfect-for-building-fast-web-applications?utm_source=hashnode&utm_medium=feed)

[May 7](https://hashnode.com/posts/why-node-js-is-perfect-for-building-fast-web-applications/69fca05f9f93a850a4d59f63)

### [Understanding Node.js: How JavaScript Escaped the Browser](https://nodejs-behind-the-scene.hashnode.dev/understanding-node-js-how-javascript-escaped-the-browser?utm_source=hashnode&utm_medium=feed)

Explore how Node.js transformed JavaScript from a browser-only scripting language into a server-side platform for building scalable, real-time app.

7 min read · [nodejs-behind-the-scene.hashnode.dev](https://nodejs-behind-the-scene.hashnode.dev/understanding-node-js-how-javascript-escaped-the-browser?utm_source=hashnode&utm_medium=feed)

[May 7](https://hashnode.com/posts/understanding-node-js-how-javascript-escaped-the-browser/69fc800c3d9a9c1019b2596b)

### [Blocking vs Non-Blocking Code in Node.js: A Simple Guide to Faster Server Performance](https://nodejs-behind-the-scene.hashnode.dev/blocking-vs-non-blocking-code-in-node-js-a-simple-guide-to-faster-server-performance?utm_source=hashnode&utm_medium=feed)

Learn how blocking vs non-blocking code affects Node.js performance. Clear examples (file I/O, DB's) and practical tips to build faster, scalable servers.

7 min read · [nodejs-behind-the-scene.hashnode.dev](https://nodejs-behind-the-scene.hashnode.dev/blocking-vs-non-blocking-code-in-node-js-a-simple-guide-to-faster-server-performance?utm_source=hashnode&utm_medium=feed)

[May 7](https://hashnode.com/posts/blocking-vs-non-blocking-code-in-node-js-a-simple-guide-to-faster-server-performance/69fc59373d9a9c101990b631)