Explaining the WWDC Sellout Time ⇒

Marco Arment:

My best guess: some part of the infrastructure handling the purchases mistook 4,500 connections, transactions, or sessions for 4,500 sales. And when the front-end servers collapsed under the load of everyone hitting them at once — a first this year, since the availability time was preannounced — we all started refreshing, those connections started stacking up, and something on the back-end triggered the “Sold Out” state early because it was mistakenly counting all of those failed sessions.

This seems like a likely explanation to me.

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