关于api的响应时间（curl）

最新推荐文章于 2025-03-31 21:18:40 发布

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最新推荐文章于 2025-03-31 21:18:40 发布 · 839 阅读

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#服务器 #运维

本文介绍了如何在服务器上利用curl命令测试第三方API的响应时间，并详细解释了curl输出的各项时间参数，包括time_namelookup、time_connect、time_appconnect等，帮助理解网络请求的各个阶段耗时。通过time_pretransfer可以得知从开始到文件传输即将开始的总时间，这对于评估网络请求的性能非常有帮助。

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最近遇到了需要在服务器上测试第三方api响应时间的需求。那么，怎么测呢？

curl安排上。

curl -w "dnslookup: %{time_namelookup} | connect: %{time_connect} | appconnect: %{time_appconnect} | pretransfer: %{time_pretransfer} | starttransfer: %{time_starttransfer} | total: %{time_total} | size: %{size_download}| redirect: %{time_redirect}"

比如: curl --location --request GET "https://www.tmall.com" -s -w %{http_code}:%{time_total}:%{speed_download}:%{time_namelookup}:%{time_redirect}:%{time_pretransfer}:%{time_appconnect}:%{time_starttransfer}:%{size_download}

那么，每个参数是什么意思呢，如下：

time_appconnect - The time, in seconds, it took from the start until the SSL/SSH/etc connect/handshake to the remote host was completed.
time_connect - The time, in seconds, it took from the start until the TCP connect to the remote host (or proxy) was completed.
time_namelookup - The time, in seconds, it took from the start until the name resolving was complet