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I have configures Nginx as reverse proxy/caching server to my apache webserver.

In the nginx config file I have setting of expires 30D at the server level. My apache config file has no expires directive , i mean no directive in the file. When I inspect my server response headers wchih seem to come from Nginx, I see the following for my http://www.example.com request:

**HTTP/200 responses are cacheable by default, unless Expires, Pragma, or Cache-Control headers are present and forbid caching. HTTP/1.0 Expires Header is present: Thu, 19 Nov 1981 08:52:00 GMT Legacy Pragma Header is present: no-cache

Can someone please suggest what is wrong , i want to set the expires to 1 month from now but it shows Thu, 19 Nov 1981 08:52:00 GMT.

Where should i start?

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If you are using Apache behind Nginx, then I assume you have a dynamic site. So, I guess http://www.yoursite.com serves dynamic content. By default, Nginx sets expires only for static files. So, please do the same test for a static file such as http://www.yoursite.com/style.css and you might notice the difference now.

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I placed the following directive in nginx.confI checked the Expires tag for static content. – Andy Feb 5 at 2:18
i placed the following config in nginx.conf location ~* \.(js|css|png|jpg|jpeg|gif|ico)$ { expires 60d; } – Andy Feb 5 at 2:19
and restarted the server. still it shows me the Thu, 19 Nov 1981 08:52:00 GMT for the expires value. please help. – Andy Feb 5 at 2:20
You may want to add the following just after/before expires directive that sets the max-age to 10hours... add_header Cache-Control "max-age=86400, public, must-revalidate" – Pothi Kalimuthu Feb 5 at 4:12
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