image compression proxy

server {
    # Internal image resizing server.
    server_name localhost;
    listen 8888;

    location ~* ^.+\.(jpeg|gif|png|jpg) {
      image_filter_buffer 20M;
      image_filter resize 450 -;
      image_filter_jpeg_quality 95;
      image_filter_interlace on;
      proxy_pass http://example.com;

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

      proxy_hide_header Cache-Control;
      proxy_hide_header Set-Cookie;
    }
}

proxy_cache_path /tmp/nginx-images-cache/ levels=1:2 keys_zone=images:10m inactive=24h max_size=100m;


    location ~* ^.+\.(jpeg|gif|png|jpg) {
      proxy_pass http://localhost:8888;
      proxy_cache images;
      proxy_cache_valid 200 24h;
    }