1 Normal cache
1.1 Browser cache
- Accelerate user access and improve the experience of a single user (browser visitor), cached locally
- Users can clear the data by clearing the browser cache
1.2 Nginx cache
- Cache on the Nginx side, promote all users who access to the nginx side
- Improve the speed of accessing upstream servers
- User visits will still generate request traffic
1.3 Control browser cache
location /files {
alias /opt/module/cache;
# expires 10s;
# expires @22h30m;
# expires -1h;
# expires epoch;
# expires off;
expires max;
}
<html>
<body>
<h1>
Hello, EveryOne ~ !~
</h1>
</body>
</html>
2 Reverse proxy cache
# proxy_cache_path 设置缓存目录
# keys_zone 设置共享内存以及占用空间大小
# max_size 设置缓存大小
# inactive 超过此时间则被清理
# use_temp_path 临时目录，使用后会影响nginx性能
proxy_cache_path /usr/local/nginx/upstream_cache keys_zone=mycache:5m max_size=1g inactive=30ms use_temp_path=off;
location / {
proxy_pass http://tomcats;
# 启用缓存，和keys_zone一致
proxy_cache mycache;
# 针对200和304状态码缓存时间为8小时
proxy_cache_valid 200 304 8h;
}
3 Related information