https://bugzilla.wikimedia.org/show_bug.cgi?id=44428
Web browser: ---
Bug ID: 44428
Summary: Handle thumbnail purges when thumbnails are in cache
but not in the backend
Product: MediaWiki
Version: unspecified
Hardware: All
OS: All
Status: NEW
Severity: normal
Priority: Unprioritized
Component: File management
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected],
[email protected]
Classification: Unclassified
Mobile Platform: ---
See proposals on bug 41130.
Purge requests are based on the file in the backend, not those in the cache. If
they fall out of sync (like if a prior purge is partially completed), then
there can be unpurgable images in the cache.
One solution is to use a varnish module to hash all thumbnails for an original
version of a file to the same place so that they can all be purged at once.
This could be based on a thumbnail url regex, since the source file is the
parent directory of the thumbnail.
If a file had 1 current and 2 old versions, the thumbnails would be mapped to 3
different hashes for that file, one for each version. Purge requests could be
issues for each of the original versions on ?action=purge (or file deletion and
other events) which purge all thumbnails for those 3 versions regardless of
what thumbnails are in the backend vs cache.
--
You are receiving this mail because:
You are on the CC list for the bug.
You are the assignee for the bug.
You are watching all bug changes.
_______________________________________________
Wikibugs-l mailing list
[email protected]
https://lists.wikimedia.org/mailman/listinfo/wikibugs-l
