http - Why are my files not served from the cache? -

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i think configured caching correctly domain still both fiddler , firefox webdeveloper show me images, css , js loaded on every request.

this response header 1 of images: 

server  nginx/0.8.36 date    sat, 30 apr 2011 05:02:58 gmt content-type    image/jpeg connction   keep-alive last-modified   fri, 08 apr 2011 22:11:34 gmt etag    "16456ec39f6cb1:0" x-powered-by    asp.net microsoftofficewebserver    5.0_pub ms-author-via   ms-fp/4.0 content-length  2885 expires tue, 24 apr 2012 05:02:58 gmt cache-control   max-age=31104000 x-cache hit accept-ranges   bytes

so, have expires header item , cache-control has max-age value (should 1 year). if you're wondering: files served asp.net there cdn in between adding header items.

where mistake???

the request ist "http://images.mydomain.com/filename.jpg". there no unique querystring parameters attached.

try add

cache-control: public, max-age=31104000

you can find more cache-control here.
can find more information here.


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