A scalable real-time chat application that enables peer-to-peer messaging and group conversations. Built with NestJS for server-side logic, MongoDB for data storage, and WebSockets for instant bidirectional communication.

Features

• User authentication with Passport and JWT
• Real-time peer-to-peer messaging
• Room-based group conversations
• WebSocket integration for low-latency communication
• MongoDB with Mongoose for data modeling
• Command-line seeding for initial dat

Technology Stack

• NestJS - Progressive Node.js framework
• MongoDB - NoSQL database
• Mongoose - MongoDB object modeling
• WebSockets - Real-time bidirectional communication
• Socket.IO - Real-time web application library
• Passport - Authentication middleware
• JWT - JSON Web Tokens for secure authentication

Project Structure

src/                - Application source code
test/               - Test files
.env.example        - Environment variables template

Installation

npm install

Running the Application

Development mode:

npm run start

Watch mode (auto-restart on changes):

npm run start:dev

Production mode:

npm run start:prod

Key Functionality

• Secure user registration and login
• Real-time message delivery
• Chat room creation and participation
• Paginated chat history
• WebSocket-based live updates