Book Image

Mastering Hibernate

By : Ramin Rad, Koushik Srinivas Kothagal
Book Image

Mastering Hibernate

By: Ramin Rad, Koushik Srinivas Kothagal

Overview of this book

Hibernate has been so successful since its inception that it even influenced the Java Enterprise Edition specification in that the Java Persistence API was dramatically changed to do it the Hibernate way. Hibernate is the tool that solves the complex problem of Object Relational Mapping. It can be used in both Java Enterprise applications as well as .Net applications. Additionally, it can be used for both SQL and NoSQL data stores. Some developers learn the basics of Hibernate and hit the ground quickly. But when demands go beyond the basics, they take a reactive approach instead of learning the fundamentals and core concepts. However, the secret to success for any good developer is knowing and understanding the tools at your disposal. It’s time to learn about your tool to use it better This book first explores the internals of Hibernate by discussing what occurs inside a Hibernate session and how Entities are managed. Then, we cover core topics such as mapping, querying, caching, and we demonstrate how to use a wide range of very useful annotations. Additionally, you will learn how to create event listeners or interceptors utilizing the improved architecture in the latest version of Hibernate.
Table of Contents (16 chapters)

Summary


In this chapter, we discussed the Hibernate cache architecture, scope, strategies, cache modes, and cache metrics. One of the reasons why Hibernate is a powerful mapping tool is its ability to reduce the number of database trips, and caching the persistent data is one of the mechanisms that help this.

You have learned about first- and second-level cache structures. You also learned about query cache. You should never rely on a cache to solve performance problems in your application. However, you should always take advantage of features that will help you achieve better performance.

The use of cached data may result in unexpected behavior in your application if not designed correctly. This chapter provided enough information to help you understand the internals of Hibernate cache. By now, you should know that if your data store is shared between multiple applications, you should not store any critical data in the second-level cache, and you should be mindful of the fact that data may...