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[return to "The part of Postgres we hate the most: Multi-version concurrency control"]
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1. Ym9oYW+c4
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2023-04-26 17:28:45
>>andren+(OP)
So why Postgres chooses the worst MVCC design compared to MySQL and Oracle? Is this because of legacy reasons or other factors?
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2. apavlo+w7
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2023-04-26 17:42:58
>>Ym9oYW+c4
Legacy reasons. The idea was that you wouldn't need a WAL because the table itself is the log. And then you could support time-travel queries if you never cleaned up the expired tuples.
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