浏览器缓存

推荐的学习博客：

1. 浏览器缓存机制：https://www.cnblogs.com/chengxs/p/10396066.html
2. 强缓存和协商缓存：
   1. https://blog.csdn.net/luzhaopan/article/details/102806135
   2. https://blog.csdn.net/fazijiaidama/article/details/114651436?utm_medium=distribute.pc_relevant.none-task-blog-baidujs_baidulandingword-0&spm=1001.2101.3001.4242
   3. https://blog.csdn.net/hhthwx/article/details/79942437
3. cookie，localStorage和sessionStorage三者的区别 https://juejin.cn/post/6844904133535744008

暂做学习记录