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Random sidenote, but I've never seen an SO answer be upvoted in realtime until now. Didn't even know they programmed such functionality.

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It's a pretty impressive system. If you're interested in their architecture, here's a YouTube video worth watching: "Marco Cecconi The Architecture of Stack Overflow - Developer Conference 2013" [0]

[0] https://www.youtube.com/watch?v=OGi8FT2j8hE

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