Rumour has it that appending a "?" to a URL will prompt caching
software to fetch the original, as it suggests to it that the page
is dynamic (and therefore not cache-able). So if you suspect
http://www.stata.com/interesting.html has changed, ask for
http://www.stata.com/interesting.html? instead. If it really was a
dynamic page, the ? would precede assignment of values to variables
like "query=logit+lang=en" or some such.
No warranties that this will work with the caching system in
question, and maybe it's difficult to do from within Stata, but it
might help.
It is certainly not difficult to do from within Stata, since Stata is a web
browser; e.g.
