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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/