Kludex/starlette
Starlette
Starlette is a lightweight ASGI web framework and asynchronous HTTP toolkit used to build high-performance HTTP and WebSocket services. It functions as a WebSocket server framework and a collection of ASGI middleware components for managing network requests through non-blocking asynchronous logic.
The framework provides tools for real-time communication via persistent bidirectional channels and infrastructure for high-performance APIs. It includes specialized capabilities for response compression, incremental data streaming, and the execution of non-blocking background tasks after a response is sent.
The toolkit covers a broad surface of web application needs, including static asset delivery, session management, and cross-origin resource sharing configuration. It also provides mechanisms for managing the application lifecycle through startup and shutdown events.
Features
- High-Performance Web Services - Provides a lightweight ASGI framework for building high-performance, low-latency asynchronous HTTP and WebSocket services.
- ASGI Frameworks - Implements a lightweight web framework based on the ASGI specification for high-performance asynchronous services.
- Application Middleware - Offers a collection of ASGI middleware for managing session state, CORS, and request-response lifecycles.
- Middleware-Based Request Pipelines - Ships a modular pipeline of pluggable middleware components to intercept and modify network requests and responses.
- WebSocket Servers - Implements a WebSocket server framework for managing persistent, bidirectional communication channels for real-time data exchange.
- WebSocket Servers - Provides a server framework for managing persistent, bidirectional WebSocket communication channels.
- High-Performance API Frameworks - Provides a lightweight framework optimized for low-latency, high-throughput API communication with built-in streaming and compression.
- Asynchronous Server Toolkits - Offers a toolkit of utilities for managing asynchronous request-response lifecycles, including non-blocking routing and streaming responses.
- Asynchronous Web Frameworks - Serves as a high-performance server foundation built on a non-blocking execution model for concurrent request processing.
- Real-Time Communication - Enables real-time, bidirectional data streaming between clients and servers using the WebSocket protocol.
- ASGI-Based - Implements the Asynchronous Server Gateway Interface (ASGI) to handle concurrent network requests through a non-blocking interface.
- Middleware Libraries - Provides a comprehensive collection of pluggable ASGI middleware for session management, GZip compression, and CORS configuration.
- Post-Response Task Execution - Schedules non-blocking functions to run after the response is sent to reduce perceived client latency.
- Background Task Runners - Provides mechanisms to run non-blocking background operations in-process after sending a response.
- Response Streaming - Sends data to clients in small chunks using asynchronous generators to avoid loading large payloads into memory.
- Asynchronous API Routing - Provides an asynchronous routing system that maps incoming URL paths to handler functions efficiently.
- Static Asset Serving - Includes capabilities for delivering static assets like images, CSS, and JavaScript from the file system.
- Web Frameworks - A lightweight ASGI framework for building high-performance async services.
