Getting random objects filtered by a set of criteria
dmitriid at gmail.com
Sat Jan 9 11:01:56 EST 2010
I want to show the user a photo to vote for. This has to be a random photo from those he hasn't voted for yet.
In a prior conversation Kevin Smith suggested I use M/R for such a task. Well, not only do I have to understand how to write such a M/R :) I also need to know whether it's ok to run such a query on every page request.
 http://twitter.com/kevsmith/status/7557173117 , http://twitter.com/kevsmith/status/7557206025
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