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>> Can't say I'm the biggest fan of Facebook as a service but what their engineers are doing in terms of pushing the state of the art is fantastic.

They let people upload comments and pictures. Anything fancy is done mostly in the client or am I overlooking something?

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> They let hundreds of millions of people upload billions of comments and pictures

Fixed it for you. Scale makes simple things difficult.

Well, for a non-client example they do a lot of analytics, probably more than we know. Plus they created their own highly optimised php compiler from scratch that isn't just production ready, but battle hardened.

HipHop alone should get Facebook's development team praise.

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