Chapter 1, Getting Started, gives a brief introduction to the technologies described in this book. This chapter is divided in two parts: the first part describes the motivation behind the Java Persistence API, outlines its main concepts, and shows how you can use it for building database queries. The second part identifies the key features of the Redis key-value store.

Chapter 2, Getting Started with Spring Data JPA, helps you to start building applications by using Spring Data JPA. You will learn to set up a project that uses Spring Data JPA and configure your application by using programmatic configuration. You will also learn an easy way to create repositories for your entities and implement a simple contact manager application by using Spring Data JPA.

Chapter 3, Building Queries with Spring Data JPA, describes the techniques that you can use to build database queries. After reading this chapter, you will know how to build database queries by using query methods, JPA Criteria API, and Querydsl. You will also continue the implementation of your contact manager application by adding a search function to it.

Chapter 4, Adding Custom Functionality to JPA Repositories, teaches you how you can customize your repositories. You will learn how you can add custom functionalities either to a single repository or to all repositories. The principles discussed in this chapter are demonstrated by customizing the repositories of your contact manager application.

Chapter 5, Getting Started with Spring Data Redis, will guide you through the installation and configuration phase that is required before you can use Spring Data Redis in your applications. It describes how you can install Redis to a computer running a Unix-like operating system. Then you can set up a project that uses Spring Data Redis. In the last part of this chapter, you will learn to configure the Redis connection and compare the features of the supported connector libraries.

Chapter 6, Building Applications with Spring Data Redis, teaches you how you can use Redis in your Spring powered applications. It describes the key components of Spring Data Redis and teaches you how to use them. You will also see Spring Data Redis in action when you use Redis as data storage of your contact manager application. The last part of this chapter describes how you can use Spring Data Redis as an implementation of the Spring 3.1 cache abstraction. You will also see how to utilize Redis' publish/subscribe messaging pattern implementation in this chapter.

In order to run the code examples of this book, you will need to install the following software:

If you want to experiment with the code examples, you will also need:

This book is great for developers who are working with Spring-powered applications, and are looking for an easier way to write data access code that uses relational databases. Also, if you are interested in learning how you can utilize Redis in your applications, this is the book for you. This book assumes that you have got some experience from the Spring Framework and the Java Persistence API. No previous experience from Redis is required.

In this book, you will find a number of styles of text that distinguish between different kinds of information. Here are some examples of these styles, and an explanation of their meaning.

Code words in text are shown as follows: "We can do this by using the repositoryFactoryBeanClass property of the @EnableJpaRepositories annotation."

A block of code is set as follows:

@Override
protected RepositoryFactorySupport createRepositoryFactory(EntityManager entityManager) {
    return new BaseRepositoryFactory(entityManager);
}

When we wish to draw your attention to a particular part of a code block, the relevant lines or items are set in bold:

@CachePut(value = "contacts", key="#p0.id")
@Transactional(rollbackFor = NotFoundException.class)
@Override
public Contact update(ContactDTO updated) throws NotFoundException {
    //Implementation remains unchanged.
}

New terms and important words are shown in bold.

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