011：Nginx控制缓存 304状态200是重新

![OJYD)U4VD1)]6C@0[[T_OI.png](https://cdn.nlark.com/yuque/0/2021/png/22616587/1632722746822-88d28543-0440-4a18-ab7b-ca78ad937177.png#clientId=u3d859655-bab7-4&from=paste&height=533&id=u29245c71&margin=%5Bobject%20Object%5D&name=OJYD%29U%604VD1%29%5D6C%400%5B%5BT_OI.png&originHeight=456&originWidth=958&originalType=binary&ratio=1&size=118720&status=done&style=none&taskId=u8f5da3b3-e338-441c-8281-db6fdb2bbbe&width=1119.0000305175781)<br />浏览器缓存：<br />![S24TRQNFK{0%)P7~7QYQ}OE.png](https://cdn.nlark.com/yuque/0/2021/png/22616587/1632722932751-c1e11815-73e6-4742-814f-d41f48423a2a.png#clientId=u3d859655-bab7-4&from=paste&height=394&id=u18387341&margin=%5Bobject%20Object%5D&name=S24TRQNFK%7B0%25%29P7~7QYQ%7DOE.png&originHeight=431&originWidth=873&originalType=binary&ratio=1&size=87132&status=done&style=none&taskId=uc295db0b-92a9-4378-a221-5117b1f75a4&width=798.5000305175781)<br />**@@@浏览器缓存Nginx控制：expire 过期时间，会判断文件是否更改：Last-modeifiled**<br />![YE7BPAH4YDD3_@_0T3JW6I.png](https://cdn.nlark.com/yuque/0/2021/png/22616587/1632722994961-87e63f55-db47-4c78-97f7-546b7fca5c1b.png#clientId=u3d859655-bab7-4&from=paste&height=956&id=u01597ab1&margin=%5Bobject%20Object%5D&name=YE7BPAH4YDD3_%40_0T3JW6%60I.png&originHeight=344&originWidth=507&originalType=binary&ratio=1&size=61777&status=done&style=none&taskId=u0a6e6856-da29-457d-9e5e-53052516aec&width=1409.500015258789)

expires @22h30m 以天为节点刷新
![734M`SZOPATY@2756Y$TAM.png
1：几秒 2；天为节点 3过期时间 4没有缓存 5：使用默认缓存 6：最大缓存时间

@@@上游到Nginx端控制：proxy_cache_path:设置缓存目录 Nginx的反向代理缓存

共享空间设置：![I1GR22WILT]0(J[LRZK`MO.png缓存整体大小

缓存时间

![MTS}A8BO{}%47I_BKYPW.png关闭临时目录

 ![B(O6C1[M%SNU[1Z%EVJDB}N.png](https://cdn.nlark.com/yuque/0/2021/png/22616587/1632723807195-78ef4466-921f-4d32-8479-39a8ac1a01d7.png#clientId=u3d859655-bab7-4&from=paste&height=198&id=uda0a8373&margin=%5Bobject%20Object%5D&name=B%28O6C1%5BM%25SNU%5B1Z%25EVJDB%7DN.png&originHeight=140&originWidth=709&originalType=binary&ratio=1&size=94694&status=done&style=none&taskId=ufd6ed0d5-5963-45ae-9ef0-c0816271669&width=1000.5000305175781)

开启上游服务器到Nginx的缓存
![X7`Q6GIK1JFN_0YAO50~QA.png