ЧПУ и NGINX (кеширующий)

    location ~* \.(jpeg|jpg|gif|png|css|js|pdf|txt|tar)$ {
    root /var/www/example.com/;
    access_log off;
    expires 30d;
    }

nserver {
    server_name mydomain.ru;
    server_name www.mydomain.ru;
    access_log /opt/nginx/log/mydomain.ru.access.log main;
    
    gzip_vary on;
    gzip_static on;
	
	if ($host = 'mydomain.ru' ) {
	rewrite ^(.*)$ http://www.mydomain.ru$1 permanent;
	}

	location = /error_50x.html {
	    root /opt/nginx/etc/html;
	}

	location / {
        error_page 404 500 502 503 504  /index.php?id=104 ;
	
	index index.php;
 	proxy_redirect off;
	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_cache_key "$scheme://$host$request_uri";
	proxy_cache STATIC;
	proxy_cache_valid 200 302 60m;
	proxy_cache_valid 404 1m;
	proxy_pass http://backend;


	fastcgi_pass x.x.x.x:port;
	fastcgi_index index.php;
	fastcgi_param SCRIPT_FILENAME /home/vhosts/mydomain.ru/html$fastcgi_script_name;
        fastcgi_intercept_errors on;
	include fastcgi_params;

    }
    location ~* \.(xml)$ {
        proxy_pass http://backend;
        proxy_set_header Host $host;
    }

    location ~* \.(jpg|png|gif|jpeg|css|mp3|wav|swf|mov|doc|pdf|xls|ppt|docx|pptx|xlsx|js|rar|zip|gz|exe|dll)$ {
	error_page 404 500 502 503 504  /error.php ;
#	proxy_cache_key "$scheme://$host$request_uri";
#	proxy_cache_valid 200 1d;
#	expires 604800;
#	proxy_cache_use_stale error timeout invalid_header updating http_500 http_502 http_503 http_504;
#	proxy_pass http://backend;
#	proxy_cache STATIC;

 	proxy_redirect off;
	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_cache_key "$scheme://$host$request_uri";
	proxy_cache STATIC;
	proxy_cache_valid 200 302 60m;
	proxy_cache_valid 404 1m;
	proxy_pass http://backend;
	proxy_intercept_errors on;	
    }

                                        

    
    location @storage {
	proxy_pass http://backend;
	proxy_set_header Host $host;
    }
    
    location ~ \.php$ {
	error_page 404 500 502 503 504  /index.php?id=104 ;	
        fastcgi_intercept_errors on;	
	fastcgi_pass x.x.x.x:port;
	fastcgi_index index.php;
	fastcgi_param SCRIPT_FILENAME /home/vhosts/mydomain.ru/html$fastcgi_script_name;
	include fastcgi_params;
    }
}