I am using Spring Boot 1.3.2 and Spring Data JPA 1.9.4 with MS Sql server2014 database and has a requirement to send notification emails after post events like postInsert, postupdate and post delete. So i am following the approach to customize the JPA post event listeners like JpaPostInsertEventListener, JpaPostUpdatePostEventListener and JpaPostDeletePostEventListener and after override the OnPostUpdate, OnPostInsert and OnPostDelete methods.

In those methods i am sending notification emails, but i am not sure this approach is correct or not to use to send notifications after post events.
So can any one help to suggest the suitable way in hibernate or other approach to achieve the above requirment.?

Unless you're using JTA, your first approach is not reliable. What if you send the email and the currently running transaction rolls back?

Fortunately, you don't have to use JTA. You need to send the email only after the transaction has been committed. This is fairly easy to do since you need a non-transactional service to coordinate the first @Transactional Repository and the EmailService.

MyBusinessService - not-@Transactional
-> MyRepositoryService - @Transactional
-> MyEmailService not-@Transactional

This way, when the call exists the @Transactional Repository service, you are sure that the database transaction has been committed.

This way, the Email Service can send the email asynchronously, which is a good approach since it allows you to reduce the overall response time.

My friend, Michale Simons, already has an example for this on GitHub. Enjoy!