I wanted to know when we should use @Transactional in Spring Boot Services. Since JpaRepository's save() method is annotated with @Tranasactional is it required for me to add that annotation in my
I want to know what actually happens when you annotate a method with @Transactional? Of course, I know that Spring will wrap that method in a Transaction. But, I have the following doubts: I heard...
Can someone explain the isolation & propagation parameters in the @Transactional annotation via a real-world example? Basically when and why should I choose to change their default values?
I used this annotation successfully for a Dao class. And rollback works for tests. But now I need to rollback real code, not just tests. There are special annotations for use in tests. But which
48 @Transactional on a class applies to each method on the service. It is a shortcut. Typically, you can set @Transactional(readOnly = true) on a service class, if you know that all methods will access the repository layer. You can then override the behavior with @Transactional on methods performing changes in your model.
0 We use @Transactional annotation when we create/update one more entity at the same time. If the method which has @Transactional throws an exception, the annotation helps to roll back the previous inserts.
Here is a worked example, CircuitStateRepository is a spring-data JPA repository. BeanS calls a transactional=read-only Bean1, which does a lookup and calls transactional=read-write Bean2 which saves a new object. Bean1 starts a read-only tx.
What is the exact difference between transactional outbox and event sourcing patterns? Both are competitive pattern and can be used for same purpose. Is there any example through which I can unders...
Using REQUIRES_NEW is only relevant when the method is invoked from a transactional context; when the method is invoked from a non-transactional context, it will behave exactly as REQUIRED - it will create a new transaction.
