Chat app

Overview

This project is a simple Chat Application where users can exchange private messages and participate in group chats. The backend is built using NestJS with WebSockets for real-time communication, while the frontend is a static site using HTML and JavaScript. The entire app is deployed on an AWS EC2 instance.

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Features

1. Private Messaging: Users can send direct messages to each other in real-time.
2. Group Chat: Multiple users can join a group chat room to send and receive messages.
3. Real-Time Communication: Messages are delivered instantly using WebSocket technology.
4. Simple UI: The frontend is a lightweight static HTML site, making it easy to deploy and scale.
5. Deployed on AWS EC2: The app is hosted on AWS, providing scalability and reliability.

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Tech Stack

Backend:

• NestJS: A framework built on top of Node.js to create scalable, modular server-side applications.
• WebSockets: Real-time communication protocol used for messaging.

Frontend:

• HTML: Simple markup for structuring the chat interface.
• JavaScript: For handling user interactions and WebSocket connections.

Infrastructure:

• AWS EC2: Hosting environment for both the backend and frontend.

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System Architecture

• Client:

  • A static HTML page served to users.
  • Connects to the backend via WebSocket for real-time messaging.

• Server:

  • A NestJS backend application that handles WebSocket connections, room creation, and message routing for private and group chats.

• AWS EC2:

  • Backend is deployed on a single EC2 instance.
  • Frontend is deployed using github pages.

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Conclusion

This Chat Application demonstrates the basic functionality of real-time messaging using WebSockets. The NestJS framework provides a solid backend architecture, and the static HTML/JavaScript frontend is simple and easy to deploy. The entire app is hosted on an AWS EC2 instance, ensuring scalability and accessibility.

Let me know if you need further details or help with specific features!