IIS Caching images served by an image handler (asp.NET)

Hello,
We have an asp.NET website that uses an image handler to display images, however we can't get IIS (7) to cache them.  As a result, the images are having to be fully loaded each page refresh, which is proving to slow the site right down.

Does anyone have a fix?

Thanks,
Webbo
Webbo_1980Asked:
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Webbo_1980Author Commented:
I saw that link in my own searching, and adding an expires header isn't the solution I'm looking for... and the registering the handler didn't seem to work either.

Anyone else have any input?
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jagssiduralaCommented:
Can you post you handler code so that i will check for any optimization.

and also refer these links

http://forums.iis.net/t/1170591.aspx

http://learn.iis.net/page.aspx/721/configure-caching-with-query-string-support-in-application-request-routing/
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