On Thu, 20 Feb 2014 23:21:37 +0100, Greg Grossmeier <greg(a)wikimedia.org> wrote:
<quote name="Bartosz Dz."
date="2014-02-20" time="22:32:42 +0100">
It's worth noting that WMF branches also
include temporary hacks to
keep current JS/CSS and cached HTML output compatible (for at least 30
days), while release branches never contain them (and thus require
HTML caches to be purged during the upgrade process).
> Feel free to base it off of either. There
shouldn't be any WMF-specific
> things in those wmfXX branches. If there is, it is a commit called
> something like "Commit of various WMF live hacks". That one commit can
> be safely reverted.
Nope, I mean different hacks (that people generally don't bother ops/deployers with),
like the ones being removed by https://gerrit.wikimedia.org/r/#/c/61075/
. They are required because (to simplify)
generated page HTML (which is cached for up to 30 days on our cluster) includes links to
"autoupdating" JS and CSS code. Thus any JS/CSS changes need to be compatible
with older generated HTML.