Hi Sergio,

> I'm thinking in a Filter that put page results in memcache when first
> accessed, and then getting that result in former accesses.

That should work. All page cache implementations do more or less the
same.

> The idea is simple but the implementation is not. (how to get the
> first request response? how to implement proper header management in
> that filter? how to not disable gzip using this?)

* If there is content in memcache, you can deliver it and exit.
Otherwise, let the request proceed, and store in the cache.
* Be sure to set the cache timeout and calculate the cache key
correctly (e.g. include the user ID or the user locale if the cached
contents depend on that).
* For HTTP headers, this presentation may help:
http://www.slideshare.net/icoloma/caching-web-contents-in-the-browser-999134

It's  more or less the same with JSP page fragments (except the
headers, of course). No rocket science.

Cheers,

Nacho.

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