nginx图片缓存处理

server {
  # ...此处省略N行配置
  # example: /thumb/[md5].png_300x187.png
  location ~ "/thumb/([0-9a-f]{32}.(png|jpg|gif))_(d+|-)x(d+|-).(png|jpg|gif)$" {
    access_log off;
    set $image $1;
    set $width $3;
    set $height $4;
    # 建议使用try_files代替if
    try_files /thumb/$image =404;
    image_filter resize $width $height;
    image_filter_buffer 10M;
    # 只会在浏览器端缓存，若要在服务器端缓存，可采用proxy的方案(此处没有给出，可自行google)
    expires 7d;
  }
}

http {
    ,,,,,
    proxy_cache_path /var/cache/nginx/cache levels=1:2 keys_zone=imgcache:100m inactive=1d max_size=10g;
    server {
    ........www.111com.net
        location ~* ^.+.(js|ico|gif|jpg|jpeg|png|html|htm)$ {
        log_not_found off;
        access_log off;
        expires 7d;
        proxy_pass http://www.111com.net;
        proxy_cache imgcache;
        proxy_cache_valid 200 302 1d;
        proxy_cache_valid 404 10m;
        proxy_cache_valid any 1h;
        proxy_cache_use_stale error timeout invalid_header updating http_500 http_502 http_503 http_504;
        }
    }
}