https://bugzilla.wikimedia.org/show_bug.cgi?id=44310
Tim Starling <tstarl...@wikimedia.org> changed:
What |Removed |Added
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CC| |tstarl...@wikimedia.org
--- Comment #8 from Tim Starling <tstarl...@wikimedia.org> ---
(In reply to comment #2)
> Is this bug a matter of setting [[mw:Manual:$wgThumbnailEpoch]]
> appropriately?
No, $wgThumbnailEpoch has no effect when the 404 handler is used. We could
delete files from the backend based on modification time, and prevent long-term
caching in varnish with a Cache-Control header if that's not done already.
(In reply to comment #7)
> If we did that, we probably might as well just get rid of the thumbnail cache
> and rely on squid/varnish only. [Saying that without looking at the varnish
> cache hit ratio or average time things get stuck in varnish cache, etc take
> with salt]
We would like to get rid of the thumbnail backend storage and use varnish only,
for various reasons. But we wouldn't try to do it with a 30 day expiry time. 6
months is probably reasonable.
This won't solve the caching issues or significantly reduce the need for manual
purging, so those bugs should be addressed separately.
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