# API Reference

Complete technical documentation for all Rage framework classes and modules.

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## Core Components

### [Controller](https://api.rage-rb.dev/RageController/API)

Base controller functionality for handling HTTP requests and responses.

### [Router](https://api.rage-rb.dev/Rage/Router/DSL/Handler)

Define and manage application routes.

### [Configuration](https://api.rage-rb.dev/Rage/Configuration)

Configure your Rage application settings and environment.

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## HTTP Handling

### [Request](https://api.rage-rb.dev/Rage/Request)

Access and manipulate incoming HTTP request data.

### [Response](https://api.rage-rb.dev/Rage/Response)

Build and send HTTP responses to clients.

### [Cookies](https://api.rage-rb.dev/Rage/Cookies)

Read and write HTTP cookies.

### [Session](https://api.rage-rb.dev/Rage/Session)

Manage user session data across requests.

### [UploadedFile](https://api.rage-rb.dev/Rage/UploadedFile)

Handle file uploads from multipart form data.

### [SSE::Message](https://api.rage-rb.dev/Rage/SSE/Message)

Build Server-Sent Events messages.

### [SSE::ConnectionProxy](https://api.rage-rb.dev/Rage/SSE/ConnectionProxy)

Low-level interface for SSE connections.

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## Middleware

### [CORS Middleware](https://api.rage-rb.dev/Rage/Cors)

Enable Cross-Origin Resource Sharing for your API.

### [RequestID Middleware](https://api.rage-rb.dev/Rage/RequestId)

Mark requests with unique identifiers for logging and debugging.

### [EnqueueMiddlewareInterface](https://api.rage-rb.dev/EnqueueMiddlewareInterface)

Intercept and modify deferred task enqueueing operations.

### [PerformMiddlewareInterface](https://api.rage-rb.dev/PerformMiddlewareInterface)

Intercept and modify deferred task execution.

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## Telemetry

### [Handler](https://api.rage-rb.dev/Rage/Telemetry/Handler)

Monitor and respond to specific span executions in your application.

### [Spans](https://api.rage-rb.dev/Rage/Telemetry/Spans)

Telemetry span definitions for tracing framework operations and events.

### [SpanResult](https://api.rage-rb.dev/Rage/Telemetry/SpanResult)

Access the outcome and status of telemetry span execution.

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## Async & Concurrency

### [Fiber](https://api.rage-rb.dev/Fiber)

Work with Ruby fibers for lightweight concurrency.

### [Deferred](https://api.rage-rb.dev/Rage/Deferred)

Handle deferred execution and asynchronous operations.

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## Events

### [Events](https://api.rage-rb.dev/Rage/Events)

Build event-driven applications with the Rage event system.

### [Subscriber](https://api.rage-rb.dev/Rage/Events/Subscriber/ClassMethods)

Subscribe to and handle application events.

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## WebSockets

### [Channel](https://api.rage-rb.dev/Rage/Cable/Channel)

Create WebSocket channels for real-time communication.

### [Connection](https://api.rage-rb.dev/Rage/Cable/Connection)

Manage WebSocket connection lifecycle and authentication.

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## Utilities

### [Logger](https://api.rage-rb.dev/Rage/Logger)

Log application messages with configurable levels and formats.