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What are Performance Metrics?什么是性能指标？
Common Metrics Include: 通常指标包含
Throughput 吞吐量
Number of bytes a Web Server can serve in a unit of time
一段时间内网站服务器处理的字节数
Hits of second 每秒点击数
How many requests can a web server process in a second
网站服务在一秒时间内运行的多少请求数
Bandwith 带宽
same as throughput ---usually referring to network or internet pipelines
与吞吐量相同，通常指的是网络或互联网管道