https://bugzilla.wikimedia.org/show_bug.cgi?id=31680
--- Comment #11 from Bawolff <[email protected]> 2011-11-16 14:54:11 UTC --- (In reply to comment #10) > (In reply to comment #8) > > How prevalent is old thumbnails not updating in your opinion (like very > > rough > > estimate - is it 1 out of 100 000 images, or 1 out of every 10 type deal). > Well, you can click through > https://commons.wikimedia.org/wiki/User:Rotatebot/Log > 30 checked - nonupdating 4 (but just the 800px thumbs): > * > https://commons.wikimedia.org/wiki/File:Manastirea_Neamtului_-_July_2008_-_7.jpg > * > https://commons.wikimedia.org/wiki/File:Manastirea_Neamtului_-_July_2008_%2813%29.jpg > * > https://commons.wikimedia.org/wiki/File:Manastirea_Neamtului_-_July_2008_%2812%29.jpg > * https://commons.wikimedia.org/wiki/File:Manastirea_Rameti_vara_4.jpg > > I just had a conversation with Saibo on irc. Apparently these thumbs are only wrong if you're browsing from europe. Us north american folks can simulate by putting 91.198.174.234 upload.wikimedia.org in our etc/hosts. So my first guess is that HTCP purge packets aren't getting to european squids, but it gets weirder. If you mangle the url of the thumb so that it should be a cache miss (aka put ?foo at the end of the thumb url) I still get the wrong thumb. My understanding is that an image squid cache miss should come from some server full of image thumbs, so this should be the same regardless from where you're accessing. (But I could be mis-interpreting something, I'm not super familar with how wmf works its servers in different places of the world set up). Anyways, here is the HTTP headers of the request that returned the wrong thumb. Server nginx/0.7.65 Date Wed, 16 Nov 2011 14:43:00 GMT Content-Type image/jpeg Connection keep-alive Content-Length 105454 Accept-Ranges bytes X-Cache MISS from amssq51.esams.wikimedia.org, MISS from amssq55.esams.wikimedia.org X-Cache-Lookup MISS from amssq51.esams.wikimedia.org:3128, MISS from amssq55.esams.wikimedia.org:80 Via 1.1 amssq51.esams.wikimedia.org:3128 (squid/2.7.STABLE9), 1.0 amssq55.esams.wikimedia.org:80 (squid/2.7.STABLE9) -- Configure bugmail: https://bugzilla.wikimedia.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug. You are on the CC list for the bug. _______________________________________________ Wikibugs-l mailing list [email protected] https://lists.wikimedia.org/mailman/listinfo/wikibugs-l
