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Hamuko
on Nov 8, 2019
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We do not use foreign keys (2016)
I'm gonna wager a guess and say that most MySQL users do use foreign keys without a problem. Most MySQL users are not running Github scale.
fdr
on Nov 8, 2019
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That's probably true. The only tell for that, really, was the complexity around migrations/schema changes, which seems a lot more painful on MySQL.
cryptonector
on Nov 8, 2019
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I don't understand why anyone would choose MySQL over PG, honestly.
jeltz
on Nov 9, 2019
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True, but the people I know who run PostgreSQL at that scale do not complain about foreign keys. Not since PostgreSQL added separate lock levels to improve concurrency with foreign keys.
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