> . As far as I'm aware Facebook's ad platform is mostly backed by hundreds of t... | Hacker News

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		judge2020 on April 11, 2022 \| parent \| context \| favorite \| on: Real World Recommendation System > . As far as I'm aware Facebook's ad platform is mostly backed by hundreds of thousands of Mysql instances. Same for YouTube itself https://www.mysql.com/customers/view/?id=750 and they use Vitess for horizontal scaling: https://vitess.io/

emptysea on April 11, 2022 [–]

YouTube has since migrated to Spanner, there’s a podcast episode with one of the Vitess creators that covers the politics of the switch

ochoseis on April 11, 2022 | [–]

That sounds interesting — do you have a link?

emptysea on April 12, 2022 | | [–]

Yeah it was a source graph episode from a bit ago: https://about.sourcegraph.com/podcast/sugu-sougoumarane/

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