|
|
|
|
Other Servers
|
|
|
|
|
=============
|
|
|
|
|
|
|
|
|
|
There are popular servers written in Python that allow the execution of
|
|
|
|
|
WSGI applications as well. Keep in mind though that some of these servers
|
|
|
|
|
were written for very specific applications and might not work as well for
|
|
|
|
|
standard WSGI application such as Flask powered ones.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Tornado
|
|
|
|
|
--------
|
|
|
|
|
|
|
|
|
|
`Tornado`_ is an open source version of the scalable, non-blocking web
|
|
|
|
|
server and tools that power `FriendFeed`_. Because it is non-blocking and
|
|
|
|
|
uses epoll, it can handle thousands of simultaneous standing connections,
|
|
|
|
|
which means it is ideal for real-time web services. Integrating this
|
|
|
|
|
service with Flask is a trivial task::
|
|
|
|
|
|
|
|
|
|
from tornado.wsgi import WSGIContainer
|
|
|
|
|
from tornado.httpserver import HTTPServer
|
|
|
|
|
from tornado.ioloop import IOLoop
|
|
|
|
|
from yourapplication import app
|
|
|
|
|
|
|
|
|
|
http_server = HTTPServer(WSGIContainer(app))
|
|
|
|
|
http_server.listen(5000)
|
|
|
|
|
IOLoop.instance().start()
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
.. _Tornado: http://www.tornadoweb.org/
|
|
|
|
|
.. _FriendFeed: http://friendfeed.com/
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Gevent
|
|
|
|
|
-------
|
|
|
|
|
|
|
|
|
|
`Gevent`_ is a coroutine-based Python networking library that uses
|
|
|
|
|
`greenlet`_ to provide a high-level synchronous API on top of `libevent`_
|
|
|
|
|
event loop::
|
|
|
|
|
|
|
|
|
|
from gevent.wsgi import WSGIServer
|
|
|
|
|
from yourapplication import app
|
|
|
|
|
|
|
|
|
|
http_server = WSGIServer(('', 5000), app)
|
|
|
|
|
http_server.serve_forever()
|
|
|
|
|
|
|
|
|
|
.. _Gevent: http://www.gevent.org/
|
|
|
|
|
.. _greenlet: http://codespeak.net/py/0.9.2/greenlet.html
|
|
|
|
|
.. _libevent: http://monkey.org/~provos/libevent/
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Gunicorn
|
|
|
|
|
--------
|
|
|
|
|
|
|
|
|
|
`Gunicorn`_ 'Green Unicorn' is a WSGI HTTP Server for UNIX. It's a pre-fork
|
|
|
|
|
worker model ported from Ruby's Unicorn project. It supports both `eventlet`_
|
|
|
|
|
and `greenlet`_. Running a Flask application on this server is quite simple::
|
|
|
|
|
|
|
|
|
|
gunicorn myproject:app
|
|
|
|
|
|
|
|
|
|
.. _Gunicorn: http://gunicorn.org/
|
|
|
|
|
.. _eventlet: http://eventlet.net/
|
|
|
|
|
.. _greenlet: http://codespeak.net/py/0.9.2/greenlet.html
|
|
|
|
|
|
