Cherrypy 是什么？美味的樱桃！

很早，很早的时候，就有了 Cherrypy。但是应用却并不广泛，无妨，许多人仍然会提起他的优异！web.py 就内置了 Cherrypy，还有 TG，还有 webfaction 的管理后台就是用 Cherrypy 做的。但是也因为他太基础，提供得太少，仅被其他框架作为基础 HTTP 服务来看待。

简单了解一下他的特色：

• A fast, HTTP/1.1-compliant, WSGI thread-pooled webserver. Typically, CherryPy itself takes only 1-2ms per page!
• Support for any other WSGI-enabled webserver or adapter, including Apache, IIS, lighttpd, mod_python, FastCGI, SCGI, and mod_wsgi
• Easy to run multiple HTTP servers (e.g. on multiple ports) at once
• A powerful configuration system for developers and deployers alike
• A flexible plugin system
• Built-in tools for caching, encoding, sessions, authorization, static content, and many more
• A native mod_python adapter
• A complete test suite
• Swappable and customizable...everything.
• Built-in profiling, coverage, and testing support.

直接看 Hello world 比较实在，对吧？

import cherrypy

class HelloWorld(object):
    def index(self):
        return "Hello World!"
    index.exposed = True

cherrypy.quickstart(HelloWorld())

其实，Cherrypy 的性能也十分不错，见这里：http://cherrypy.org/wiki/CherryPySpeed，自带的 server 能跑500+请求。