Transactional Communication

The subject of transactional communication encompasses a wide range of important elements. Spring - @Transactional - What happens in background?. 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...

java - What does @Transactional do? [duplicate] Asked 12 years, 3 months ago Modified 6 years, 1 month ago Viewed 28k times When should we use @Transactional annotation?

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 Spring @Transactional - isolation, propagation - Stack Overflow. 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? Spring transaction REQUIRED vs REQUIRES_NEW - Stack Overflow. 125 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. Annotation @Transactional.

I used this annotation successfully for a Dao class. Building on this, and rollback works for tests. But now I need to rollback real code, not just tests.

There are special annotations for use in tests. java - @Async and @Transactional - Stack Overflow. It will use the same connection from the parent method (method with @Transactional) and any exception caused in the called method (method without @Transactional) will cause the transaction to rollback as configured in the transaction definition. If the @Async annotation is being used extra care should be taken with respect to transaction. java - What is the difference between defining @Transactional on class ....

48 @Transactional on a class applies to each method on the service. In this context, 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.

How to use @Transactional with Spring Data? 0 We use @Transactional annotation when we create/update one more entity at the same time. Moreover, if the method which has @Transactional throws an exception, the annotation helps to roll back the previous inserts. java - Spring JPA repository transactionality - Stack Overflow.