On Mon, Mar 10, 2014 at 2:10 PM, Matthew Walker mwalker@wikimedia.org wrote:
I recall during some fundraising adventures with CentralNotice that in some cases things were persisting in cache beyond the expiry of $wgSquidMaxage. We were debating setting $wgCacheEpoch [0] before I just went through and issued manual purges on all the affected pages (also causing an outage of swift because it couldn't handle a lot of deletes...).
Was this quite a while ago? Greg pointed out bug 44570 [1] when I started asking questions about cleaning up old branches. It looks to me like the interesting behavior of cache TTL reset when the backing article hasn't been edited in the 31 day window should be fixed in production since 2013-04-24. This is exactly the sort of gotcha I was hoping would be surfaced by asking around though so please correct me if there is still a way that the static assets can be needed for more than the "use plus 31 days" window.
[1]: https://bugzilla.wikimedia.org/show_bug.cgi?id=44570
Bryan