Build & Deploy a Production-Ready Fullstack Realtime Chat App | React, Better Auth & Socket.io
In this fullstack tutorial, you’ll learn how to build and deploy a production-ready realtime chat application using React, Socket.io, BetterAuth, Express, PostgreSQL, Prisma, and TypeScript from scratch.
We’ll implement authentication, realtime messaging, online user tracking, conversation rooms, and proper socket lifecycle management — just like in real-world production apps.
Finally, we’ll deploy the entire application to Render so it’s live and accessible on the internet.
This is a perfect portfolio project for developers who want to master realtime systems and build scalable fullstack applications.
🚀 What You’ll Learn
✅ How to build a realtime chat app with React
✅ How Socket.io works (rooms, events, reconnection handling)
✅ Managing global state with Zustand
✅ Handling authentication and protected routes
✅ Tracking online users in realtime
✅ Fixing common realtime bugs (duplicate sockets, missed joins)
✅ Deploying a fullstack application to production
🔗 Links
💼 Connect with EgbonTech on LinkedIn: [ / emmanuel-egbon-8a3991239 ]
💻 Source Code: [https://github.com/egbontech/chatapp-...]
🌍 Live Preview: [https://chatapp-7543.onrender.com]
📁 Assets: [https://drive.google.com/file/d/1My2o...]
Chapters
00:00 – Intro & Project Overview
07:43 – Project Setup & Folder Structure
23:22 – Building the Authentication UI
36:46 – Building the Chat Page UI
01:30:15 – Creating the Edit Profile Modal
01:52:29 – Setting Up the Express Server
02:08:35 – Setting Up Prisma with PostgreSQL
02:21:32 – Configuring BetterAuth
02:35:50 – Implementing Authentication Logic
03:05:10 – Edit Profile Functionality
03:50:52 – Fetching Users & Search Functionality
04:10:54 – Implementing Online/Offline Presence
04:37:45 – Starting Conversations
05:00:42 – Creating Messages
05:16:02 – Fetching Messages
05:46:51 – Implementing Realtime Messaging with Socket.io
06:09:17 – Lint Checks & Production Cleanup
06:12:18 – Deploying the Fullstack App on Render
06:35:35 – Final Thoughts & Outro
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