Scripts2026年4月12日·1 分钟阅读

Sanic — Async Python Web Framework Built for Speed

Sanic is an async Python web framework built for speed. Native async/await from the ground up, HTTP/1.1 and HTTP/2, WebSocket, streaming, and auto-generated API docs. Designed to be fast, flexible, and easy to use.

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介绍

Sanic is an async Python web framework built for speed. It was one of the first Python frameworks to embrace async/await natively (Python 3.5+), using uvloop for higher throughput. Features built-in server, WebSocket support, streaming, middleware, and auto-generated OpenAPI docs.

What Sanic Does

  • Async native — async def handlers throughout
  • Built-in server — no external WSGI/ASGI server needed
  • WebSocket — native support
  • Streaming — request and response streaming
  • Middleware — request/response lifecycle hooks
  • Blueprints — modular route grouping
  • OpenAPI — auto-generated API docs
  • Signals — event-based hooks
  • Background tasks — via app.add_task()

Comparison

Framework Server Speed
Sanic Built-in (uvloop) Very fast
FastAPI Uvicorn Very fast
Flask Gunicorn Medium
Tornado Built-in Fast

FAQ

Q: Sanic vs FastAPI? A: FastAPI has Pydantic validation + automatic OpenAPI + a larger community; Sanic has a built-in server, more flexible middleware, and earlier async support. Most new API projects pick FastAPI.

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