Is this a bug or a cache related effect? (Or both?)

Maybe it's only me?

Example: On the Related panel of this link there is currently a "Make it funner" related question that's no longer available.

  • We cache the "Related" questions to disk, refreshing them periodically, as it's an expensive operation. The deleted question would be removed at some point (I think it's no longer there). – Jarrod Dixon Jul 8 '09 at 9:12
  • "Some point" meaning after a random amount of activity on that question :) – Jarrod Dixon Jul 8 '09 at 9:13
  • @Jarrod - was just about to file this again for this question (stackoverflow.com/questions/2192827), which includes the question "How to use several managers and change them by clicking on the link/button in django-admin?" in the related sidebar (stackoverflow.com/questions/2198670), even though that question was deleted on February 16th. Would it be worth running through lists of related questions every once in a while to purge deleted questions, not necessarily to recalculate the entire list. – Dominic Rodger Mar 8 '10 at 13:01

It is possible for related questions to show a deleted question, as those lists are only rebuilt..

  • any time the question or any of its answers are edited
  • any time a new answer is provided
  • randomly 30% chance of rebuilding triggered by page view, once the question is older than 30 days

Interesting. In the example you give it is fairly recently deleted (yesterday), so it could be cache related; but that is pure conjecture...

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