Powerful, scalable backend for the AI Chat application with robust API endpoints and AI integration
Features • Tech Stack • Implementation • Getting Started • Contributing • Contact
The AI Chat App Backend is a robust, scalable server-side application that powers the AI Chat platform. Built with Node.js and Express, it provides secure API endpoints, handles authentication, manages database operations, and integrates with AI services to deliver intelligent responses. The backend is designed with performance, security, and scalability in mind, ensuring a smooth experience for users of the AI Chat application.
The AI Chat App Backend includes the following key implementations:
- JWT-based authentication with access and refresh tokens
- Secure password hashing with bcrypt
- Email verification flow
- Password reset functionality
- OAuth integration for social logins
- Integration with AI SDK for natural language processing
- Multiple AI model support (GPT-4, Gemini, etc.)
- Context management for multi-turn conversations
- Streaming responses for real-time interaction
- Rate limiting and usage tracking
- MongoDB schemas with Mongoose ODM
- Efficient indexing for optimized queries
- Data validation and sanitization
- Caching layer with Redis for improved performance
- Transaction support for data integrity
- WebSocket implementation with Socket.IO
- Event-based architecture for real-time updates
- Presence indicators (typing, online status)
- Message delivery confirmation
- Connection state management
- Transactional email system
- Templated emails for verification, password reset, etc.
- Email queue with retry mechanism
- Email delivery tracking
- CORS configuration
- Helmet.js for HTTP headers security
- Rate limiting middleware
- Input validation and sanitization
- XSS and CSRF protection
Follow these steps to set up the backend project locally:
- Node.js 18.x or later
- MongoDB
- Redis (optional, for caching)
- npm or yarn
- Git
- Clone the repository:
git clone https://github.com/yourusername/ai-chat-app-backend.git
cd backend
- Install dependencies:
npm install
# or
yarn install
- Set up environment variables:
Create a
.envfile in the root directory with the following variables:
# Server
PORT=8000
# Database
MONGODB_URL=your mongodb url
# Authentication
JWT_SECRET=your_jwt_secret
- Run the development server:
npm start
# or
yarn dev
- The server will be running at http://localhost:8000
Contributions are welcome! Here's how you can contribute to the project:
- Go to the Issues tab on GitHub
- Click on "New Issue"
- Choose the appropriate issue template
- Fill in the required information
- Submit the issue
- Find an issue you'd like to work on
- Comment on the issue to express your interest
- Fork the repository
- Create a new branch:
git checkout -b feature/your-feature-name
- Make your changes
- Run tests:
npm test
- Commit your changes:
git commit -m "feat: add your feature description"
- Push to your branch:
git push origin feature/your-feature-name
- Create a Pull Request
- Follow the Conventional Commits specification
- Ensure your code passes all tests
- Add tests for new features
- Update documentation if necessary
- Make sure your code follows the project's coding standards
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