> if they were using a slower language they'd be clocking in at say 20 or 30 servers. Not remotely worth optimizing for saving that many servers at their scale.

> if they were using a slower language they'd be clocking in at say 20 or 30 servers. Not remotely worth optimizing for saving that many servers at their scale. If they were using a slower language, they'd get much higher latencies (maybe 200-300ms instead of 33ms) that couldn't be fixed no matter how many servers they add. If you read the linked page and Nick Craver's blog carefully, you'll notice that they're deliberately aiming for very low latencies everywhere.