Book Image

Spring Data

By : Petri Kainulainen
Book Image

Spring Data

By: Petri Kainulainen

Overview of this book

Spring Framework has always had a good support for different data access technologies. However, developers had to use technology-specific APIs, which often led to a situation where a lot of boilerplate code had to be written in order to implement even the simplest operations. Spring Data changed all this. Spring Data makes it easier to implement Spring-powered applications that use cloud-based storage services, NoSQL databases, map-reduce frameworks or relational databases. "Spring Data" is a practical guide that is full of step-by-step instructions and examples which ensure that you can start using the Java Persistence API and Redis in your applications without extra hassle. This book provides a brief introduction to the underlying data storage technologies, gives step-by-step instructions that will help you utilize the discussed technologies in your applications, and provides a solid foundation for expanding your knowledge beyond the concepts described in this book. You will learn an easier way to manage your entities and to create database queries with Spring Data JPA. This book also demonstrates how you can add custom functions to your repositories. You will also learn how to use the Redis key-value store as data storage and to use its other features for enhancing your applications. "Spring Data" includes all the practical instructions and examples that provide you with all the information you need to create JPA repositories with Spring Data JPA and to utilize the performance of Redis in your applications by using Spring Data Redis.
Table of Contents (13 chapters)

Chapter 1. Getting Started

In this book, we will concentrate on two specific subprojects that offer support for Java Persistence API 2.0 and the Redis key-value store. But before we get to the point, we need to get a brief introduction to both the technologies. We need to do this for two reasons:

First, if we want to truly understand the benefits of Spring Data JPA, we need to have an idea on how database queries are created when the standard API is used. As soon as we compare these code samples to a query creation code that uses Spring Data JPA, its benefits are revealed to us.

Second, the basic knowledge about the Redis key-value store will help us to understand the second part of this book which describes how we can use it in our applications. After all, we should be familiar with any technology that we use in our applications. Right?

In this chapter, we will cover the following topics:

  • The motivation behind the Java Persistence API

  • The main components of the Java Persistence API

  • How we can create database queries with the Java Persistence API

  • The data types supported by the Redis key-value store.

  • The main features of the Redis key-value store.