Add pessimistic locking extended example #10113
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Yay! I'll be on the lockout if I find more topics to expand on. |
Not sure if that was intended or not, but I dig it. |
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I do not expect everyone to be "database masters" to wrap their head around locking, so the added example should be enough to understand when and how it should be used: avoid data races by keeping the data immutable until the transaction completes.