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Singleton Design Pattern with Double Locking

Propagation strategy in Spring gives the ability to developer to decide how the transaction would behave in application. Developer can apply behaviour in application that the Spring bean would be executed using the same transaction or a new on will be created. There are certain behaviours which a develope can set on a transaction: REQUIRED : It specifies that if a transaction is already opened, the same transaction will used for current bean execution, otherwise a new one will be…

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