Nginx的缓存头

Question

我的nginx将返回以下响应：

HTTP/1.1 200 OK 
Server: nginx 
Date: Tue, 29 Aug 2017 12:52:34 GMT 
Content-Type: text/html; charset=UTF-8 
Connection: keep-alive 
Vary: Accept-Encoding 
Set-Cookie: PHPSESSID=btj7eq897r10tl7br5pf97ttd4; path=/ 
Expires: Thu, 19 Nov 1981 08:52:00 GMT 
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0 
Pragma: no-cache 

我不知道在哪里呢Expires和Cache-Control正在建立，我查了网站的配置上nginx的和它不存在...任何想法？由PHP设置

Answer 1

行，所以它的罚款：

https://andidittrich.de/2015/09/php-worry-about-some-magical-added-cache-control-header.html