location / {
	root /var/www/html;

	if ($host = 'xxx.com' ) {
			rewrite  ^/(.*)$  $scheme://www.xxx.com/$1  permanent;
	}

	#adding boost
	set $boost "";
	set $boost_query "_";

	if ( $request_method = GET ) {
			set $boost G;
	}

	if ($http_cookie !~ "DRUPAL_UID") {
			set $boost "${boost}D";
	}

	if ($query_string = "") {
			set $boost "${boost}Q";
	}

	if ( -f /var/www/html/cache/normal/$host$request_uri$boost_query.html.gz ) {
			set $boost "${boost}F";
	}

	proxy_set_header X-Real-IP              $remote_addr;
	proxy_set_header X-Forwarded-For        $proxy_add_x_forwarded_for;
	proxy_set_header Host                   $host;

	if ($boost = GDQF){
			rewrite ^.*$ /cache/normal/$host/$request_uri$boost_query.html.gz break;
	}

	if ($boost !~ GDQF) {
			proxy_pass http://localhost:8080;
	}
}