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Upgrading Uber's MySQL Fleet

(www.uber.com)
234 points benocodes | 1 comments | 14 Oct 24 12:08 UTC | HN request time: 0.205s | source
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vivzkestrel ◴[14 Oct 24 17:46 UTC] No.41839908[source]▶
Anyone has any ideas why Uber doesn't use PostgreSQL?
replies(2): >>41839944 #>>41839967 #
1. cyberax ◴[14 Oct 24 17:52 UTC] No.41839967[source]▶
They switched from PG to MySQL because they need to update highly concurrent tables, and PG created tons of bloat as a result. MySQL uses locking instead of optimistic concurrency.