nginx-magento.conf

proxy_buffering on;

proxy_cache_path  /var/nginx/cache  levels=1:2    keys_zone=STATIC:10m   inactive=24h  max_size=1g;

limit_req_zone $binary_remote_addr zone=five_per_second:10m rate=5r/s;
limit_req_zone $binary_remote_addr zone=ten_per_one_minute:10m rate=10r/m;

server {
    listen 80;
    server_name       www.yourdomain.com;
    set               $do_not_cache "0";

    if ( $request_method !~ ^(GET|HEAD)$ ) {
	      set $do_not_cache "1";
    }

    location ~* ^/(index\.php/)?catalogsearch/(ajax) {
  	    limit_req               zone=ten_per_one_minute;
        proxy_pass              http://127.0.0.1:8080;
        proxy_set_header        Host $host;
        proxy_set_header        X-Real-IP $remote_addr;
        proxy_set_header        X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header        X-Forwarded-Proto $scheme;

        proxy_cache             STATIC;
        proxy_cache_key         "$host$request_uri$cookie_user";
        proxy_cache_valid       200 301 302 120m;
	proxy_cache_valid  	    404      1m;
        proxy_cache_use_stale   error timeout invalid_header updating
                                http_500 http_502 http_503 http_504;
        proxy_no_cache          $do_not_cache;
	proxy_ignore_headers    X-Accel-Expires Expires Cache-Control;
    }

    location ~* ^.+.(jpg|jpeg|gif|css|png|js|ico|xml|txt|wof)$ {
        if ($request_method != GET) {
            return 403;
        }
        access_log              off;
        expires                 max;
        proxy_pass              http://127.0.0.1:8080;
        proxy_set_header        Host $host;
        proxy_set_header        X-Real-IP $remote_addr;
        proxy_set_header        X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header        X-Forwarded-Proto $scheme;
	proxy_cache	            STATIC;
	proxy_cache_key         "$host$request_uri$cookie_user";
        proxy_cache_valid       200 301 302 1d;
	proxy_cache_valid       404      10m;
	proxy_cache_methods     GET;
        proxy_cache_use_stale   error timeout invalid_header updating
                                http_500 http_502 http_503 http_504;
        proxy_no_cache          $do_not_cache;
	proxy_cache_bypass      $http_x_purge_header;
	proxy_ignore_headers    X-Accel-Expires Expires Cache-Control;
    }

    location / {
	limit_req               zone=five_per_second burst=10;
	limit_rate              5m;
        proxy_pass              http://127.0.0.1:8080;
        proxy_set_header        Host $host;
        proxy_set_header        X-Real-IP $remote_addr;
        proxy_set_header        X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header        X-Forwarded-Proto $scheme;

	proxy_cache             STATIC;
	proxy_cache_key        "$host$request_uri$cookie_user";
    	proxy_cache_valid      	200 301 302 120m;
	proxy_cache_valid  	    404      1m;
        proxy_cache_use_stale   error timeout invalid_header updating
                                http_500 http_502 http_503 http_504;
	proxy_no_cache          $do_not_cache;
	proxy_cache_bypass      $http_x_purge_header; #curl -H "X-Purge: 1"
	proxy_ignore_headers    X-Accel-Expires Expires Cache-Control;

	add_header              X-Cached $upstream_cache_status;
   }
}