Last modified: 2010-05-21 21:19:48 UTC

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Bug 8748 - bad cache for articles as well
bad cache for articles as well
Status: RESOLVED WORKSFORME
Product: MediaWiki
Classification: Unclassified
Parser (Other open bugs)
1.11.x
PC Windows XP
: Normal normal with 1 vote (vote)
: ---
Assigned To: Nobody - You can work on this!
:
Depends on:
Blocks:
  Show dependency treegraph
 
Reported: 2007-01-24 03:45 UTC by Nicholas Tung
Modified: 2010-05-21 21:19 UTC (History)
3 users (show)

See Also:
Web browser: ---
Mobile Platform: ---
Assignee Huggle Beta Tester: ---


Attachments
original bad cache example (212.73 KB, image/png)
2007-01-24 03:46 UTC, Nicholas Tung
Details
bad cache internet explorer (284.36 KB, image/png)
2007-01-24 03:46 UTC, Nicholas Tung
Details
bad cache opera (155.43 KB, image/png)
2007-01-24 03:47 UTC, Nicholas Tung
Details
bad cache opera, with vpn to hopefully avoid proxy servers, and cache cleared (155.30 KB, image/png)
2007-01-24 03:47 UTC, Nicholas Tung
Details

Description Nicholas Tung 2007-01-24 03:45:56 UTC
I have gotten some old versions of pages served as well (previously, images and
MediaWiki:Sidebar were reported). I will attach a screenshot of a cache that is
nearly 1 day old. My clock is PDT but I guess it doesn't matter. I am as sure as
an end user can be that I have cleared my browser cache, and I have looked at a
good version of the page before the edit. When I reload the page (not even the
cache invalidate reload, ctrl shift r), it looks fine.

I also tried this on Internet Explorer and Opera. I thought it might have been a
proxy server, so I used a campus full tunnel VPN, and I still got a bad version.
All of them resolved when using "refresh", and often failed when opening the URL
again (or searching google for e.g. "Wikipedia PlayStation 3" and following the
link).

Perhaps the refresh is using the same connection to the same server, which is
then invalidating its local cache of the page?
Comment 1 Nicholas Tung 2007-01-24 03:46:25 UTC
Created attachment 3127 [details]
original bad cache example
Comment 2 Nicholas Tung 2007-01-24 03:46:47 UTC
Created attachment 3128 [details]
bad cache internet explorer
Comment 3 Nicholas Tung 2007-01-24 03:47:02 UTC
Created attachment 3129 [details]
bad cache opera
Comment 4 Nicholas Tung 2007-01-24 03:47:31 UTC
Created attachment 3130 [details]
bad cache opera, with vpn to hopefully avoid proxy servers, and cache cleared
Comment 5 Nicholas Tung 2007-01-24 03:53:52 UTC
"often failed" - interesting...I searched for PlayStation 3 on google
(http://www.google.com/search?hl=en&q=wikipedia+playstation+3&btnG=Google+Search&form_keyword=&search_text=&sourceid=Mozilla-search&topcat_id=All+Products),
and opened the same link 6 times in different tabs. The fourth one had closer
version, and the others had bad versions. All of the bad versions were
http://en.wikipedia.org/w/index.php?title=PlayStation_3&oldid=102171236, and the
better one was still 5 versions old,
http://en.wikipedia.org/w/index.php?title=PlayStation_3&oldid=102745496.
Comment 6 Aaron Schulz 2008-09-27 22:54:03 UTC
*** Bug 15659 has been marked as a duplicate of this bug. ***
Comment 7 burgherr 2008-10-15 01:34:19 UTC
A few minutes ago, I got an extremely old version (in the range of months, maybe years) of http://de.wikipedia.org/wiki/Wissenschaftlicher_Witz in one browser, and a proper one in another browser (without purging). Loading the page again in the first browser (forced refresh of all elements) still gives me the same content. This has also happened with other de.wp articles (like [[de:Rhein]]).

The point here is that the versions are *ancient* (older than the browser that I have here, whose cache also has been cleared recently), not just a little outdated, or even truncated or garbled. So I am not sure whether this is the same bug as discussed here. I haven't purged the WP-side cache, but I can't tell which server has been used (that's controlled by my non-caching proxy anyway).

The outdated view's contents (similar to a version from the year 2004, http://de.wikipedia.org/w/index.php?title=Wissenschaftlicher_Witz&oldid=499382):
--------------------------------------

Wissenschaftlicher Witz
aus Wikipedia, der freien Enzyklopädie
Wechseln zu: Navigation, Suche

Der wissenschaftliche Witz benutzt in der Regel Fachwissen, um unmögliche Dinge oder Situationen mit Hilfe wissenschaftlicher Fachausdrücke soweit zu verstecken, dass sie nicht auf den ersten Blick erkennbar sind. Dabei werden gerne Aspekte der Ironie und Satire aufgenommen.

Das vielleicht bekannteste und ausgefeilteste Objekt dieser Art sind die Rhinogradentia, ein running gag der Zoologie, der auch in anderen Wissenschaften (z.B. in der Medizin) zur Erheiterung von wissenschaftliche Kongressen Verwendung findet. Diese imaginäre Tiergruppe geht auf das Buch Bau und Leben der Rhinogradentia zurück, das von einem namhaften Zoologen unter Wahrung aller formalen Aspekte einer wissenschaftlichen Publikation geschrieben und im G. Fischer Verlag veröffentlicht wurde, der für zahlreiche Standard-Lehrbücher der Biologie bekannt ist. Die Rhinogradentia sind nach mehreren Übersetzungen auch weltweit bekannt und beliebt. Fragen aus diesem Bereich der Zoologie werden international in Klausuren verwendet, aber auch, um ernsthaft biologische Zusammenhänge mit humorvollem Einschlag in der Lehre darzustellen.

Im juristischen Bereich spielt Friedrich Gottlob Nagelmann eine ähnliche Rolle. Er ist inzwischen an der Universität Potsdam beheimatet und hat dort eine eigene Institutshomepage.

Die Politik besitzt dafür Jakob M. Mierscheid, der im Bundestagshandbuch erwähnt ist und über den offiziellen Server des Deutschen Bundestages erreichbar ist.

Als Diplomat in geheimster Mission ist für Deutschland Edmund Friedemann Dräcker unterwegs. Als 1982 eine Zeitung berichtete, Dräcker habe auf einer Eisscholle nahe dem antarktischen Archipel die BRD-Flagge gehisst, nahm das die DDR-Presse als bare Münze und sah einen Beleg für den imperialistischen Charakter West-Deutschlands.

Als enzyklopädisch-wissenschaftspropädeutische Neuschöpfung gibt es im Bereich der Wikipedia die Leuchtschnabelbeutelschabe.

Als besonders scharfsinniger Schöpfer von Witzen mit wissenschaftlichem Anspruch (und beißender wissenschaftlicher Satire) gilt der berühmte Göttinger Physiker Georg Christoph Lichtenberg (1742-1799).

Siehe auch: Wikipedia:Humor in der Wikipedia, Nihilartikel

Weblinks
    * http://www.gutenberg2000.de/lichtenb/schwaenz/schwaenz.htm Lichtenberg: Fragment von Schwänzen. Ein Beitrag zu den Physiognomischen Fragmenten.
    * http://www.dhmo.org/ Support the ban of Dihydrogen Monoxide!
Comment 8 Bryan Baron 2009-09-23 20:26:05 UTC
WORKSFORME this.
Comment 9 Chad H. 2010-05-21 21:19:48 UTC
When browsing Wikipedia as an anonymous user (as you were in all the above screenshots), you will be served cached content. This is independent of your browser cache. Usually this doesn't lag too much (especially on popular pages), but sometimes it can get a little out of date. Doing an action=purge on the page will usually help resolve it too.

Seeing a revision that is ancient (years?) old is unlikely, but could happen. If it did, I'd be more likely to assume a broken cache that's long since fixed. In any case, we don't seem to have any other bugs reporting such ancient revisions being served, so I'm going to close this WFM.

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