Hello Everyone,
I have read that GWT 2.1 RequestFactory aggressively caches data and only 
sends whats necessary(diffs/deltas) to the server.

I have three questions regarding the specifics of the this caching.
would be very grateful if you provide some pointers.

- does RequestFactory store the data (entity/value proxies) on the client 
side (within the browser)?
(using an internal DataStructure such as a Map ?)

- given that RF caches data aggressively,
is it still valid to create a custom client-side cache and
manually store already retrieved Entity/Value proxies
in that cache, so that upon user request, instead of asking RequestFactory 
right away
to give us the data, we first lookup the Cache, and if present return the 
data from the cache,
and if not, only then asking RequestFactory. will there be any performance 
gain doing this ?

- does every call on RequestFactory result in a Server roundtrip ?

Thank You

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