Comment on Every GitHub object has two IDsparentComments−bastawhiz7moUuid4 is extremely random, which makes it bad for most database indexes. You can use uuid7 instead.Uuid7 would not have helped GitHub, though, because it doesn't solve the sharding issue.
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Uuid4 is extremely random, which makes it bad for most database indexes. You can use uuid7 instead.
Uuid7 would not have helped GitHub, though, because it doesn't solve the sharding issue.