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Differences in JPA entity locking modes

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justin cater

Posts: 19616
Nickname: justin78
Registered: Mar, 2011

Justin Cater is executive editor at Java Code Geeks
Differences in JPA entity locking modes Posted: Feb 12, 2016 7:32 AM
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JPA provides essentially 2 types of locking mechanisms to help synchronize access to entities. Both mechanisms prevent a scenario, where 2 transactions overwrite data of each other without knowing it. By entity locking, we typically want to prevent following scenario with 2 parallel transactions: Adam’s transaction reads data X Barbara’s transaction reads data X Adam’s ...

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