1,http
(1)request reponse(2)code:200 302,304 400 404 403 500 502 504 nginx499
2,https
3,nginx配置
4,php-fpm
5,http->nginx->php 运行过程
6,一致性hash
7,LRU算法
8,redis
(1)持久化(2)过期键
9,mysql
(1)索引的机制(2)innodb myisam 数据结构
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