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在浏览器中输入URL地址到页面显示出来中间发生什么了呢？ #10

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mamba-1024 opened this issue Oct 16, 2018 · 3 comments
Open

在浏览器中输入URL地址到页面显示出来中间发生什么了呢？ #10

mamba-1024 opened this issue Oct 16, 2018 · 3 comments

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@mamba-1024
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mamba-1024 commented Oct 16, 2018 •
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以前别人问我这个问题的时候，起初一时间还是不知道怎么回答，不过仔细想想，这个问题涉及的东西还是蛮多的。如果是自己的话，估计也回答不好。。。
@mamba-1024
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从网上看看了觉得以下对我帮助很大

@mamba-1024
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mamba-1024 commented Oct 16, 2018 •
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DNS域名解析过程图解

@mamba-1024
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浏览器的缓存机制

  • 强制缓存
  • 协商缓存

强制缓存优先于协商缓存进行，若强制缓存(Expires和Cache-Control)生效则直接使用缓存，若不生效则进行协商缓存(Last-Modified / If-Modified-Since和Etag / If-None-Match)，协商缓存由服务器决定是否使用缓存，若协商缓存失效，那么代表该请求的缓存失效，重新获取请求结果，再存入浏览器缓存中；生效则返回304，继续使用缓存

TP传送门
浏览器缓存知识小结及应用

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@mamba-1024