On Nov 28, 2012, at 11:29 PM, Samat samat78@gmail.com wrote:
Hi,
I am the only one, who see this (in attachment) on the top of WMF's Main Page (https://wikimediafoundation.org/wiki/Home)?
Looks like that one got purged in the mean time. I currently see it on:
https://wikimediafoundation.org/wiki/FAQ/en
This is caused by the recent change to the headings in the Vector skin. They were changed from h4/h5, however the CSS used those tags to identify them (instead of using css classes). Which means, as expected, that the page layout breaks for up to 30 days.
Page cache is controlled by the wiki page content. Unless the page is modified, the cache is kept for up to 30 days for anonymous users.
Resource modules, however, are served by ResourceLoader which has its own much more efficient and deployable cache mechanism. However this means that the resources for the skin are deployed globally and site-wide within 5 minutes. Whereas the html isn't for another 2 weeks.
This is why client resources must always be backwards compatible.
-- Krinkle