Does anyone know the general layout of how facebook's privacy permissions system works (database)? I've been trying to figure out how they manage to have such a complex set of rules be applied to various content on their site, yet it remains fast. How are they doing that?
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Note, regarding the bounty, I don't even care about Facebook specifically—just the various ways of implementing privacy permissions (abstractly) with similar levels of control to Facebook's. – Aaron Yodaiken Jun 25 '10 at 05:34
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See http://stackoverflow.com/questions/3122772/how-are-viewing-permissions-usually-implemented-in-a-relational-database – Aaron Yodaiken Jun 26 '10 at 05:30
