Chatx

https://chatx-zbry.onrender.com/

A scalable, real-time chat application built with Node.js and Socket.IO, featuring SQLite persistence and multi-core clustering support.

Features

• Real-time Communication: Powered by Socket.IO for low-latency messaging.
• Scalability: Implements Node.js native clustering with @socket.io/cluster-adapter to utilize available CPU cores.
• Data Persistence: Messages are stored securely in a local SQLite database (chat.db).
• Connection Recovery: Built-in support for connection state recovery to handle temporary disconnects without losing messages.

Tech Stack

• Backend: Node.js, Express
• WebSockets: Socket.IO
• Database: SQLite (sqlite3, sqlite)
• Clustering: @socket.io/cluster-adapter

Installation

1. Navigate to the project directory.

2. Install the required dependencies:

   npm install express socket.io sqlite3 sqlite @socket.io/cluster-adapter

   Note: If you are using PowerShell on Windows and encounter errors installing the cluster adapter, wrap the package name in quotes: '@socket.io/cluster-adapter'.

Usage

1. Start the server:

   node index.js

2. The application will spawn worker processes based on your available CPU cores.

3. Open your web browser and navigate to http://localhost:3000.

File Structure

• index.js: The main server file containing clustering logic, database setup, and socket event handlers.
• index.html: The client-side HTML file serving the chat interface.
• chat.db: The SQLite database file (auto-generated upon first run).