In this chapter, we will take a look at Hibernate events, interceptors, and envers. Additionally, to understand the internals of Hibernate as they relate to some of the concepts in this chapter, we will also cover the concept of a Java Service Provider Interface (SPI) and its use in Hibernate. Events and interceptors can be triggered when we load or store entities in the persistence context. In this chapter, you will see how you can use them to implement a functionality similar to DB triggers and other event-based functions. Furthermore, this chapter covers entity auditing (envers), which implements entity revision management to automatically store historical snapshots of entities and also provides auditing mechanism. This is useful for implementing an audit mechanism in your application and allows you to implement a rollback mechanism.