--- title: "Saurav Pratap Singh (@saurav26) | Hashnode" description: "Developer. Read the latest articles by Saurav Pratap Singh on Hashnode." url: "https://hashnode.com/@saurav26" --- @saurav26 # Saurav Pratap Singh @saurav26 · Joined January 2025 Developer ### [How Instagram, WhatsApp, Uber & Netflix Would Be Built Today Using Expo Router](https://saurav26.hashnode.dev/insta-whatsapp-uber-netflix-expo?utm_source=hashnode&utm_medium=feed) How Instagram, WhatsApp, Uber & Netflix Would Be Built Today Using Expo Router 12 min read · [saurav26.hashnode.dev](https://saurav26.hashnode.dev/insta-whatsapp-uber-netflix-expo?utm_source=hashnode&utm_medium=feed) [May 23](https://hashnode.com/posts/insta-whatsapp-uber-netflix-expo/6a112d341f237623ea6221ba) ### [Linux File System Hunting](https://saurav26.hashnode.dev/linux-file-system-hunting?utm_source=hashnode&utm_medium=feed) This isn't beginner commands, but hunting the file structure in Linux. 17 min read · [saurav26.hashnode.dev](https://saurav26.hashnode.dev/linux-file-system-hunting?utm_source=hashnode&utm_medium=feed) [May 10](https://hashnode.com/posts/linux-file-system-hunting/6a001b56e3eebc2e20389471) ### [How React Virtual DOM works under the hood](https://saurav26.hashnode.dev/react-virtual-dom?utm_source=hashnode&utm_medium=feed) Deep dive into React’s rendering pipeline i.e. how Virtual DOM is created, diffed, and committed using Fiber for efficient UI updates. 10 min read · [saurav26.hashnode.dev](https://saurav26.hashnode.dev/react-virtual-dom?utm_source=hashnode&utm_medium=feed) [2](https://hashnode.com/posts/react-virtual-dom/69f97d0b46610fd60666f9a4) [May 5](https://hashnode.com/posts/react-virtual-dom/69f97d0b46610fd60666f9a4) ### [Sessions vs JWT vs Cookies: Understanding Authentication Approaches](https://saurav26.hashnode.dev/sessions-vs-jwt-vs-cookies?utm_source=hashnode&utm_medium=feed) Confused between sessions and JWT? This guide explains stateful vs stateless authentication with clear examples, trade-offs, and real-world use cases. 8 min read · [saurav26.hashnode.dev](https://saurav26.hashnode.dev/sessions-vs-jwt-vs-cookies?utm_source=hashnode&utm_medium=feed) [May 3](https://hashnode.com/posts/sessions-vs-jwt-vs-cookies/69f6da000ab374db9978072b) ### [JWT Authentication in Node.js Explained Simply](https://saurav26.hashnode.dev/jwt-authentication-in-node-js?utm_source=hashnode&utm_medium=feed) Confused about JWT? This guide explains the complete authentication flow, from login to token validation, with clear diagrams and practical examples. 8 min read · [saurav26.hashnode.dev](https://saurav26.hashnode.dev/jwt-authentication-in-node-js?utm_source=hashnode&utm_medium=feed) [May 3](https://hashnode.com/posts/jwt-authentication-in-node-js/69f6b2860ab374db996315bf)