http/https-latency #276
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文中的服务器处理耗时 其实是响应体传输耗时。服务器处理耗时是是服务器接收到请求并开始返回第一个字节所花的时间,在上面curl的例子中time_starttransfer - time_pretransfer。 |
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举个例子,北京到美国洛杉矶的 RTT 延迟为 190 ms,那么从北京访问洛杉矶的服务延迟大约为:4 * 190 ms + 后端业务处理时间。这里的“4”代表 HTTPS 请求的 4 个 RTT。 |
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http/https-latency
构建大规模高可用的分布式系统
https://www.thebyte.com.cn/http/https-latency.html
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