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Comparative Benchmark Numbers @ Rackspace

I've taken the benchmarks from Matthew Rothenberg's phoenix-showdown, updated Phoenix to 0.13.1 and ran the tests on the most powerful machines available at Rackspace.

Results

Framework	Throughput (req/s)	Latency (ms)	Consistency (σ ms)

#WSGI:(web server gateway interface)WEB服务器网关接口 WSGI是为python语言定义的web服务器和web应用程序或框架之间的一种简单而实用的借口。wsgi是一个web组件的接口规范，它将web组件分为三类：server，middleware，application

##wsgi server wsgi server可以理解为一个符合wsgi规范的web server，接收request请求，封装一系列环境变量，按照wsgi规范调用注册的wsgi app，最后将response返回给客户端。文字很难解释清楚wsgi server到底是什么东西，以及做些什么事情，最直观的方式还是看wsgi server的实现代码。以python自带的wsgiref为例，wsgiref是按照wsgi规范实现的一个简单wsgi server。其工作流程如下：

服务器创建socket，监听端口，等待客户端连接。
当有请求来时，服务器解析客户端信息放到环境变量environ中，并调用绑定的handler来处理请求。
handler解析这个http请求，将请求信息例如method，path等放到environ中。
wsgi handler再将一些服务器端信息也放到environ中，最后服务器信息，客户端信息，本次请求信息全部都保存到了环境变量environ中。

	/**
	* Fancy ID generator that creates 20-character string identifiers with the following properties:
	*
	* 1. They're based on timestamp so that they sort after any existing ids.
	* 2. They contain 72-bits of random data after the timestamp so that IDs won't collide with other clients' IDs.
	* 3. They sort lexicographically (so the timestamp is converted to characters that will sort properly).
	* 4. They're monotonically increasing. Even if you generate more than one in the same timestamp, the
	* latter ones will sort after the former ones. We do this by using the previous random bits
	* but "incrementing" them by 1 (only in the case of a timestamp collision).
	*/

	# vi: ft=dosini
	[user]
	name = Pavan Kumar Sunkara
	email = pavan.sss1991@gmail.com
	username = pksunkara
	[core]
	editor = nvim
	whitespace = fix,-indent-with-non-tab,trailing-space,cr-at-eol
	pager = delta
	[column]