What web architecture is used in Blizzard's Battle.net? [closed]

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Blizzard Entertainment uses Battle.net website for managing Starcraft, Diablo开发者_JAVA百科 and Warcraft series. I can't even imagine how many daily hits they get on www.battle.net. But I am very curious what could they use to build such a highly scalable web application? I want to go ahead and guess it's built on top of Django or Google App Engine but I could be wrong.

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Not either of those. It's Java-based.