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Caching response headers

 
Greenhorn
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Hi,

I'm trying to improve the server-side caching filter found here: http://www.onjava.com/pub/a/onjava/2003/11/19/filters.html?page=3

by making it cache the response headers so when the page is hit from the cache, it'll get the exact same response. The problem is I don't see a portable way to get at the underlying response headers when implementing a ServletResponseWrapper.

How is one supposed to do this? Is there a better preexisting server-side caching filter in existance? This seems like a pretty common-place problem.

Thanks,
Gili
 
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