[Nginx] nginx cache不缓存问题的原因与解决方案

proxy_temp_path  /nginx/cache/temp;
  proxy_cache_path /nginx/cache/path levels=1:2 keys_zone=cache_test:2048m inactive=7d max_size=10g;
......
 location ~ .(gif|jpg|jgep|png)$ {
  proxy_pass http://upstreams;
   
  proxy_ignore_headers X-Accel-Expires Expires Cache-Control Set-Cookie;
  proxy_cache cache_test;
  #设置缓存的key
  proxy_cache_key $host$uri$is_args$args;
  #设置状态码为200和304的响应可以进行缓存，并且缓存时间为1天
  proxy_cache_valid 200 304 1d;
  expires 30d;
  }

proxy_ignore_headers X-Accel-Expires Expires Cache-Control Set-Cookie;