my environment is nginx(1.3.11) + php-fpm curl -I -H "Accept-Encoding: gzip,deflate" http://www.ihezhu.com/ HTTP/1.1 200 OK Server: nginx Date: Fri, 18 Jan 2013 05:18:31 GMT Content-Type: text/html; charset=utf-8 Connection: keep-alive Vary: Accept-Encoding Set-Cookie: PHPSESSID=2quqa651uglt62ku49re2nt1n4; path=/ Expires: Thu, 19 Nov 1981 08:52:00 GMT Cache-Control: no-storby wingoo - Nginx Mailing List - English