fix cache wackiness+discussion

I wonder if it's possible that somehow the new layout functionality is leading to entire pages getting cached? --Ethan

Would that account for included cards that have just been added not showing up when reloading?

  --John Abbe.....Wed Mar 30 13:29:23 -0700 2011

(It would, but that didn't turn out to be the issue).

I think we need to make a bigger priority of this. I turned the content caching back on and added a new debugging page: /admin/show_cache/[cardname]. So far I haven't heard any chatter about cache issues. But in general we should try to check the debugging page before clearing the cache.

  --Ethan McCutchen.....Thu May 26 17:22:07 -0700 2011

I just added a fix that addressed the example case. Basically I made it so that all of a card's particles (eg, for card A+B+C, particles would include A, B, C, A+B, and A+B+C) have their cache cleared whenever there is a saving error on the card. There may be some more semi-obvious things like that that we're missing. The reproducible example above was highly useful for this!!!

  --Ethan McCutchen.....Thu May 26 17:24:34 -0700 2011

moving this to testing because of all the refactoring that we've done (and the lack of reproducible problems to test)

  --Ethan McCutchen.....Tue Jul 19 12:05:54 -0700 2011

Closing. I don't really believe we've fixed *all* the cache wackiness, but I don't think we have any reproducible examples of things breaking.

  --Ethan McCutchen.....Mon Aug 08 14:43:06 -0700 2011