# Nexios API Reference

## Core Components

### Application
- [Application Class](application.md) - The main application class for creating Nexios applications
- [Configuration](configuration.md) - Application configuration and settings
- [Middleware](middleware.md) - Middleware system for request/response processing
- [Error Handling](errors.md) - Error handling and custom exceptions

### Routing
- [HTTP Router](routing.md) - HTTP routing system
- [WebSocket Router](websocket.md) - WebSocket routing system
- [File Router](file-router.md) - File-based routing system
- [Route Groups](groups.md) - Route grouping and organization

### HTTP
- [Request](request.md) - HTTP request handling
- [Response](response.md) - HTTP response handling
- [Headers](headers.md) - Header management
- [Cookies](cookies.md) - Cookie handling

### WebSocket
- [WebSocket](websocket.md) - WebSocket connection handling
- [WebSocket Events](websocket-events.md) - WebSocket event system

### Utilities
- [Decorators](decorators.md) - Route and handler decorators
- [Events](events.md) - Event system
- [Logging](logging.md) - Logging system
- [Pagination](pagination.md) - Response pagination
- [OpenAPI](openapi.md) - OpenAPI/Swagger documentation

## Quick Start

```python
from nexios import NexiosApp

app = NexiosApp()

@app.get("/")
async def hello(request, response):
    return response.json({"message": "Hello, World!"})

if __name__ == "__main__":
    app.run()
```

## Key Features

1. **Async Support**: Full async/await support for all handlers
2. **Type Safety**: Built-in type checking and validation
3. **OpenAPI**: Automatic OpenAPI/Swagger documentation
4. **WebSocket**: Native WebSocket support
5. **Middleware**: Flexible middleware system
6. **File Routing**: File-based routing system
7. **Pagination**: Built-in response pagination
8. **Error Handling**: Comprehensive error handling system
9. **Event System**: Event-driven architecture
10. **Logging**: Configurable logging system

## Best Practices

1. Use type hints for better code completion and error checking
2. Implement proper error handling using the exception system
3. Use middleware for cross-cutting concerns
4. Follow RESTful principles for API design
5. Use route groups for better organization
6. Implement proper validation using request models
7. Use the built-in pagination for large datasets
8. Document your API using OpenAPI annotations
9. Use WebSocket for real-time features
10. Implement proper logging for debugging and monitoring
