---
title: "Sushruto Majumdar (@Sushruto26) | Hashnode"
description: "ECE → Software | MERN | DSA | Tech Writing. Read the latest articles by Sushruto Majumdar on Hashnode."
url: "https://hashnode.com/@Sushruto26"
---

@Sushruto26

# Sushruto Majumdar

@Sushruto26 · Joined December 2025

ECE → Software | MERN | DSA | Tech Writing

### [How Instagram Stores Reels, Photos, and Drafts Behind the Scenes](https://sushruto.hashnode.dev/how-instagram-stores-reels-photos-and-drafts-behind-the-scenes?utm_source=hashnode&utm_medium=feed)

A. Introduction Every day, millions of users create Reels, upload photos, and save unfinished content as drafts on social media platforms like Instagram. While the user experience appears simple—recor

6 min read · [sushruto.hashnode.dev](https://sushruto.hashnode.dev/how-instagram-stores-reels-photos-and-drafts-behind-the-scenes?utm_source=hashnode&utm_medium=feed)

[May 31](https://hashnode.com/posts/how-instagram-stores-reels-photos-and-drafts-behind-the-scenes/6a1c789e9af8b1a1e5d8b1e7)

### [How WhatsApp Works Without Internet: Offline Messaging and Sync Explained](https://sushruto.hashnode.dev/how-whatsapp-works-without-internet-offline-messaging-and-sync-explained?utm_source=hashnode&utm_medium=feed)

A. Introduction Imagine you're on a flight with Airplane Mode enabled. You type a message to your friend on WhatsApp and hit Send. Surprisingly, the message instantly appears in your chat window with

6 min read · [sushruto.hashnode.dev](https://sushruto.hashnode.dev/how-whatsapp-works-without-internet-offline-messaging-and-sync-explained?utm_source=hashnode&utm_medium=feed)

[May 31](https://hashnode.com/posts/how-whatsapp-works-without-internet-offline-messaging-and-sync-explained/6a1c6d83cc299fde142ecdcc)

### [Expo Router vs React Navigation: Which One Should You Use in 2026?](https://sushruto.hashnode.dev/expo-router-vs-react-navigation-which-one-should-you-use-in-2026?utm_source=hashnode&utm_medium=feed)

Mobile applications have evolved significantly over the last few years. Modern apps are no longer simple collections of screens; they contain authentication flows, dashboards, nested tabs, notificatio

8 min read · [sushruto.hashnode.dev](https://sushruto.hashnode.dev/expo-router-vs-react-navigation-which-one-should-you-use-in-2026?utm_source=hashnode&utm_medium=feed)

[May 31](https://hashnode.com/posts/expo-router-vs-react-navigation-which-one-should-you-use-in-2026/6a1bb901f2f22cdbe9b75379)

### [How Instagram, WhatsApp, Uber & Netflix Would Be Built Today Using Expo Router](https://sushruto.hashnode.dev/how-instagram-whatsapp-uber-netflix-would-be-built-today-using-expo-router?utm_source=hashnode&utm_medium=feed)

A. Introduction When we start building mobile apps with React Native, we often begin with a simple folder structure: /components /screens /utils This works fine… until it doesn’t. As applications grow

5 min read · [sushruto.hashnode.dev](https://sushruto.hashnode.dev/how-instagram-whatsapp-uber-netflix-would-be-built-today-using-expo-router?utm_source=hashnode&utm_medium=feed)

[May 29](https://hashnode.com/posts/how-instagram-whatsapp-uber-netflix-would-be-built-today-using-expo-router/6a1a15e2a369e7c9ad1c9bfd)

### [The Node.js Event Loop Explained](https://sushruto.hashnode.dev/the-node-js-event-loop-explained?utm_source=hashnode&utm_medium=feed)

One of the most important concepts behind Node.js is the event loop. The event loop is the reason Node.js can: Handle many requests efficiently Perform asynchronous operations Build scalable applic

4 min read · [sushruto.hashnode.dev](https://sushruto.hashnode.dev/the-node-js-event-loop-explained?utm_source=hashnode&utm_medium=feed)

[May 10](https://hashnode.com/posts/the-node-js-event-loop-explained/6a00885de3eebc2e20824d37)