I am reveiewing the code for one of the senior member for the first peer review so he added @Transactional annotation at custom repository with delete method. The custom Repository delete method is being called in one of the Asychronous service method.

public interface DeviceRepository extends 
 JpaRepository<Device, Long>, JpaSpecificationExecutor<Device> {
 
    @Transactional
    void deleteDeviceByDeviceName(String deviceName);
 }

do we need to use @Transactional method Repository layer, will impact anything like performanance.

any scenario’s to use @Transactional annotation at JPA Repository layer?