Change the lock mode in the "Aggregate Fields" cookbook (aggregate-fields.rst) article. #11344
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Change `PESSIMISTIC_READ` to `PESSIMISTIC_WRITE`. Otherwise, the solution to the race condition at the bottom of the article would allow concurrent reads, which would not solve the presented race condition problem.
greg0ire
approved these changes
Mar 9, 2024
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Looks consistent with https://www.doctrine-project.org/projects/doctrine-orm/en/3.1/reference/transactions-and-concurrency.html#pessimistic-locking, which mentions that write acts at the database level. It's not completely clear at what level read acts. I'd check the implementation if I wasn't on my phone.
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Change
PESSIMISTIC_READtoPESSIMISTIC_WRITEbecause otherwise the solution to the race condition at the bottom of the article would allow concurrent reads, which would not solve the presented race condition problem.Please correct me if I'm wrong because I might be.