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)

Chapter 5. Hibernate Cache

In this chapter, we will discuss various topics on Hibernate caching. One of the advantages of using Hibernate is its ability to cache entities to minimize trips to the database. Of course, to take advantage of this feature correctly, one must be fully aware of the pitfalls. For example, if you cache entities that can be updated by another application, then your cache may be invalid. In this chapter, we will discuss various cache levels, how to enable cache, strategies, and more:

  • Cache structure:

    • Cache scope

    • First-level cache

    • Second-level cache

    • Query cache

  • Caching benefits and pitfalls

  • Caching strategies:

    • Read only

    • Non-strict read write

    • Read write

    • Transactional

    • Object identity

  • Managing cache:

    • Remove cached entities

    • Cache modes

  • Cache metrics