https://bugzilla.wikimedia.org/show_bug.cgi?id=41130
Derk-Jan Hartman <hartman.w...@gmail.com> changed:
What |Removed |Added
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CC| |hartman.w...@gmail.com
--- Comment #12 from Derk-Jan Hartman <hartman.w...@gmail.com> 2012-10-25
10:09:55 UTC ---
@TMg: It's not a stupid question. It has to do with how caching systems work.
Every url (for every potential size) is cached independently. In general, you
can also only purge the URLs you know to exist. There is no 'wildcard' system
in caching systems (it's not a database, it's a 'flat' lookup table), because
that is terribly inefficient in such systems (it's also what makes them fast
for caching).
There is an idea now to make all urls of one image use the same 'identifier'
and then purge that identifier instead of the 'url'. How feasible this is is
not yet clear, there might be performance implications.
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