UIX - method data providers and the include element

Question

I've just read in the documentation (Chapter 16 UIX Developer's Guide - Integration with Java ...)
'Instead of recreating the entire page and all of its UINodes every time you render, you'll be able to keep most of the page cached and only recreate the part that varies.'
The example given is using a method data provider which returns a UINode and data binding to it using <include data:node="node@source">
Is it true then that method data providers are always actioned when a page is rendered, even if it has been cached by the framework? If so does that apply to all method data providers not just those which provide data for <includes>? When hitting the back button I have a requirement for part of my page to be the latest view of some data - at the moment I'm overriding 'isCacheable' in my implementation of UIXPageBroker and always returning false to get the right effect but am unhappy about doing it this way.
Hope this makes sense
Cheers
Ian

Answer 1

Data providers are always re-queried on every render; not just
method data providers, but all. So if the UINode served
up to data:node is different every time, you'll get different
output.
However, this is an entirely orthogonal question to whether
the browser will bother asking for the page when the user hits
"Back". Server-side caching and client-side caching are
very different beasts!