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Re:Urban Airship: Postgres to NoSQL and back by mattslight on Wednesday September 28, 2011 @09:37AM (#3047762)
I can summarise this presentation as:

  * Postgre 8.3 on AWS not good enough
  -> lets try Mongo
  * Mongo performance not good enough
  -> lets try and fix this
  * Oh shit we don't know what we're doing lets go back to Postgre
  * There's a new version 9.0 this might sort us out
  * No sadly Postgres 9.0 is no better
  * Oh wait maybe Amazon performance is to blame
  * Lets try it on real hardware
  * Oh yes that's better

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