Nginx. Как отключить кэширование админки?

server {
    listen 80;
    server_name example.com;
    
gzip on;
gzip_disable "msie6";
gzip_vary on;
gzip_proxied any;
gzip_comp_level 6;
gzip_buffers 16 8k;
gzip_types text/plain text/css application/json application/x-javascript text/xml application/xml application/xml+rss text/javascript;
expires 14d;
client_max_body_size 30m;
index index.php;
 
location ~ /admin/* {
       expires off;
       break;
    }

    location / {
        try_files $uri $uri/ /index.php?$uri&$args;
    }

    location ~ \.php$ {
		fastcgi_split_path_info ^(.+\.php)(/.+)$;
		fastcgi_pass unix:/var/run/php5-fpm.sock;
		fastcgi_index index.php;
		include fastcgi_params;
	}

	location ~ /\.ht {
		deny all;
	}
}