Использование кукисов, проблемы кеширования nginx

<code>
#--------------------------------------------------------------------------
	gzip on;
	gzip_disable "msie6";
	gzip_vary on;
	gzip_proxied any;
	gzip_comp_level 5;
	gzip_buffers 16 8k;
	gzip_http_version 1.1;
	gzip_types text/plain text/css application/json application/x-javascript text/xml application/xml application/xml+rss text/javascript;

    proxy_cache_path /var/lib/nginx/wholepage levels=1:2 keys_zone=wholepage:50m max_size=1G;
    proxy_cache_bypass $cookie_key;
    proxy_no_cache $cookie_key;

#--------------------------------------------------------------------------

</code>

<code>
        server {
                server_name site.ru www.site.ru;
                listen 11.111.111.250;
                set $root_path /var/www/path/data/www/site.ru;

		gzip_min_length 1000;

                location / {
#by Genius_A
                        proxy_cache wholepage;
                        proxy_cache_valid 200 301 302 50m;
                        proxy_cache_valid 404 50m;
                        proxy_cache_key "$request_method|$http_if_modified_since|$http_if_none_match|$host|$request_uri";
#proxy_hide_header "Set-Cookie";
 #                       proxy_ignore_headers "Cache-Control" "Expires" "Set-Cookie";
                        
                        
                        proxy_pass http://91.228.153.250:8080;
                        proxy_redirect http://91.228.153.250:8080/ /;
                        proxy_set_header Host $host;
                        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
                        proxy_set_header X-Forwarded-Proto $scheme;
                        proxy_set_header X-Real-IP $remote_addr;
 #                       proxy_ignore_headers "Cache-Control" "Expires" "Set-Cookie";
                }
	}

</code>

<code>
цpR
Ќ
KEY: GET|||site.ru|/templates/skin/fortune/images/favicon.ico?v1
HTTP/1.1 200 OK
Date: Wed, 30 Oct 2013 11:15:37 GMT
Server: Apache/2.2.17 (Ubuntu)
Last-Modified: Sun, 16 Dec 2012 14:56:32 GMT
ETag: "17c800f3-37e-4d0f978628810"
Accept-Ranges: bytes
Content-Length: 894
Connection: close
Content-Type: image/x-icon
</code>

<code>
#--------------------------------------------------------------------------
        server {
                server_name site.ru www.site.ru;
                listen 11.111.111.250;
                set $root_path /var/www/path/data/www/site.ru;

		gzip_min_length 1000;

		error_page 404 = @fallback;

		location ~* ^/(webstat/|awstats|webmail/|myadmin/|manimg/|pgadmin/) {
			proxy_pass http://111.111.111.250:8080;
			proxy_redirect http://site.ru:8080/ /;
			proxy_set_header Host $host;
			proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
			proxy_set_header X-Real-IP $remote_addr;
		}


                location / {
#by Genius_A
                        proxy_cache wholepage;
                        proxy_cache_valid 200 301 302 50m;
                        proxy_cache_valid 404 50m;
                        proxy_cache_key "$request_method|$http_if_modified_since|$http_if_none_match|$host|$request_uri";
#proxy_hide_header "Set-Cookie";
 #                       proxy_ignore_headers "Cache-Control" "Expires" "Set-Cookie";
                        
                        
                        proxy_pass http://11.111.111.250:8080;
                        proxy_redirect http://site.ru:8080/ /;
                        proxy_set_header Host $host;
                        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
                        proxy_set_header X-Forwarded-Proto $scheme;
                        proxy_set_header X-Real-IP $remote_addr;
 #                       proxy_ignore_headers "Cache-Control" "Expires" "Set-Cookie";
                }
		location ~* ^.+\.(jpg|jpeg|gif|png|svg|js|css|mp3|ogg|mpe?g|avi|zip|gz|bz2?|rar|swf)$ {
			root /var/www/alser/data/www/site.ru;
			access_log /var/www/httpd-logs/site.ru.access.log ;
			access_log /var/www/nginx-logs/path isp;
		}
		location @fallback {
			proxy_pass http://11.111.111.250:8080;
			proxy_set_header Host $host;
			proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
			proxy_set_header X-Real-IP $remote_addr;
		}

	}
}
#--------------------------------------------------------------------------


</code>