WhatsApp Clone with MERN Stack | Real-Time Chat App using Socket.IO & React.js | Full-Stack Project

🔥✅ Real-time chat or AI agent? Try ZEGOCLOUD！ Website: https://bit.ly/46Bv42e AI Agent: https://bit.ly/4l2NQmw ⚡🔥 The Ultimate 9+ Hour WhatsApp Clone Masterclass — Part 1! 🔥 In this mega session, we build the complete backend of a production-ready WhatsApp Clone, plus the login UI feature, all in one continuous 9+ hour shot! This project uses the MERN stack (MongoDB, Express.js, React.js, Node.js) along with Socket.IO to enable real-time messaging, authentication, and advanced user features. ✅ What We Build in This 9+ Hour Part 1 Full backend from scratch User register & login (Phone & Email OTP) JWT token-based authentication & secure cookies Socket.IO setup for real-time communication Online/offline status & basic last seen Conversation and message models & APIs Profile update & story upload backend logic Login UI & frontend auth integration Protected routes setup ✨ Coming in Part 2 Full chat UI with live typing, online status, media sharing Stories UI & profile customization Themes, image uploads, and more 💻 Source Code & Repo 🟢 Whatsapp Data Repository Link (Free Starter) 👉 https://github.com/agraharidheeraj/wh... 🟢 Whatsapp Clone Source Code Link 👉 https://topmate.io/desi_stack/1621325 💡 Why Watch This? Real-world backend architecture Master authentication & real-time chat logic Boost your resume with a production-level project Build a strong portfolio project from scratch 🎥 Check Out My Other Big Projects Backend Development Masterclass (Full Series) 👉    • Backend Development Masterclass Series | N...   Book Kart E-Commerce Series 👉    • 🚀 Book Kart Full-Stack E-Commerce Series |...   DeepSeek AI Clone (Streaming Chat App) 👉    • 🔥 Full-Stack 1-Shot Projects | Build Real-...   🔗 Stay Connected YouTube — Desi Stack GitHub — https://github.com/agraharidheeraj Instagram — @desistack7 LinkedIn — Dheeraj Agrahari ⏱️ Timestamps: 00:00:00 Introduction & Project Overview 00:16:15 Project Setup & Clean Architecture 00:27:40 MongoDB & Express Setup 00:37:00 User Schema (Model) 00:44:00 Conversation & Message Schemas (Models) 00:54:10 Sending OTP to Email & Phone Number 01:07:35 Email & Phone OTP Service Implementation 01:37:40 Verify OTP API 01:45:30 JWT Token & Cookies Setup 01:50:50 OTP Logic & Verification Flow 02:03:28 Update User Profile API & Cloudinary Setup 02:20:28 Auth Middleware & User API 02:48:00 Conversation & Message APIs 03:27:00 Testing Chat APIs in Postman 03:33:33 Status Schema & API 03:52:45 Socket.IO Setup & Events 04:42:35 Integrating Socket.IO Middleware 04:47:40 Status Route Testing 04:54:54 Applying Socket Events to Chat & Status APIs 05:10:00 Page Setup, Routes, and API Services 05:25:48 Zustand Setup for State Management 05:34:00 Login UI & Auth Integration 07:39:00 Protected Routes & Middleware 07:55:00 Home Screen & Layout Setup 08:20:30 Sidebar UI Design 08:39:30 User Chat List UI 09:15:00 Final Testing & Wrap-Up 💬 If you enjoyed this marathon session, smash that LIKE ❤️, comment what features you'd like to see next, and subscribe to support my journey! Let’s build the full WhatsApp clone together — feature by feature! 🚀🔥 #WhatsAppClone #MERNStack #NodeJS #SocketIO #FullStackDeveloper #WebDevelopment #Authentication #RealTimeChat #CodingBootcamp #DesiStack #LearnToCode #BackendDevelopment #ReactJS #MongoDB #ExpressJS #FullStackProject #PortfolioProject #OpenSource #CodeWithMe