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[html] 第224天关于缓存你了解多少？ #1565

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haizhilin2013 opened this issue Nov 25, 2019 · 2 comments

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haizhilin2013 commented Nov 25, 2019

第224天关于缓存你了解多少？

我也要出题

haizhilin2013 added the html label

censek commented Apr 7, 2020

cookie：判断用户是否登录过网站，以便实现下次自动登录或记住密码；保存事件信息等。
localstorage：敏感账号一次性登录；单页面用的较多（sessionStorage 可以保证打开页面时 sessionStorage 的数据为空）。
sessionstorage：常用于长期登录（判断用户是否已登录），适合长期保存在本地的数据。

jianmofeng commented Apr 28, 2020

HTTP缓存机制
强缓存：浏览器直接从本地缓存获取数据，不与服务器进行交互
协商缓存：浏览器发送请求到服务器，服务器判断是否可以使用本地缓存

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