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Python 3.5+ web server that's written to go fast

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Sanic

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Sanic is a Flask-like Python 3.5+ web server that's written to go fast. It's based on the work done by the amazing folks at magicstack, and was inspired by this article: https://magic.io/blog/uvloop-blazing-fast-python-networking/.

On top of being Flask-like, Sanic supports async request handlers. This means you can use the new shiny async/await syntax from Python 3.5, making your code non-blocking and speedy.

Benchmarks

All tests were run on an AWS medium instance running ubuntu, using 1 process. Each script delivered a small JSON response and was tested with wrk using 100 connections. Pypy was tested for Falcon and Flask but did not speed up requests.

Server Implementation Requests/sec Avg Latency
Sanic Python 3.5 + uvloop 33,342 2.96ms
Wheezy gunicorn + meinheld 20,244 4.94ms
Falcon gunicorn + meinheld 18,972 5.27ms
Bottle gunicorn + meinheld 13,596 7.36ms
Flask gunicorn + meinheld 4,988 20.08ms
Kyoukai Python 3.5 + uvloop 3,889 27.44ms
Aiohttp Python 3.5 + uvloop 2,979 33.42ms
Tornado Python 3.5 2,138 46.66ms

Hello World

from sanic import Sanic
from sanic.response import json


app = Sanic()


@app.route("/")
async def test(request):
    return json({"hello": "world"})

if __name__ == "__main__":
    app.run(host="0.0.0.0", port=8000)

Installation

  • python -m pip install sanic

Documentation

TODO:

  • Streamed file processing
  • File output
  • Examples of integrations with 3rd-party modules
  • RESTful router

Limitations:

  • No wheels for uvloop and httptools on Windows :(

Final Thoughts:

                 ▄▄▄▄▄
        ▀▀▀██████▄▄▄       _______________
      ▄▄▄▄▄  █████████▄  /                 \
     ▀▀▀▀█████▌ ▀▐▄ ▀▐█ |   Gotta go fast!  |
   ▀▀█████▄▄ ▀██████▄██ | _________________/
   ▀▄▄▄▄▄  ▀▀█▄▀█════█▀ |/
        ▀▀▀▄  ▀▀███ ▀       ▄▄
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▌     ▐                ▀▀▄▄▄▀
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Python 3.5+ web server that's written to go fast

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