Book Image

Building Microservices with Spring

By : Dinesh Rajput, Rajesh R V
Book Image

Building Microservices with Spring

By: Dinesh Rajput, Rajesh R V

Overview of this book

Getting Started with Spring Microservices begins with an overview of the Spring Framework 5.0, its design patterns, and its guidelines that enable you to implement responsive microservices at scale. You will learn how to use GoF patterns in application design. You will understand the dependency injection pattern, which is the main principle behind the decoupling process of the Spring Framework and makes it easier to manage your code. Then, you will learn how to use proxy patterns in aspect-oriented programming and remoting. Moving on, you will understand the JDBC template patterns and their use in abstracting database access. After understanding the basics, you will move on to more advanced topics, such as reactive streams and concurrency. Written to the latest specifications of Spring that focuses on Reactive Programming, the Learning Path teaches you how to build modern, internet-scale Java applications in no time. Next, you will understand how Spring Boot is used to deploying serverless autonomous services by removing the need to have a heavyweight application server. You’ll also explore ways to deploy your microservices to Docker and managing them with Mesos. By the end of this Learning Path, you will have the clarity and confidence for implementing microservices using Spring Framework. This Learning Path includes content from the following Packt products: • Spring 5 Microservices by Rajesh R V • Spring 5 Design Patterns by Dinesh Rajput
Table of Contents (22 chapters)
Title Page
Copyright
About Packt
Contributors
Preface
Index

Enabling caching via the Proxy pattern


You can enable Spring's cache abstraction in the following two ways:

  • Using Annotation
  • Using the XML namespace

Spring transparently applies caching to the methods of Spring beans by using AOP. Spring applies proxy around the Spring beans where you declare the methods that need to be cached. This proxy adds the dynamic behavior of caching to the Spring beans. The following diagram illustrates the caching behavior:

In the preceding diagram, you can see that Spring applies Proxy to the AccountServiceImpl class to add the caching behavior. Spring uses the GoF proxy pattern to implement caching in the application.

Let's look at how to enable this feature in a Spring application.

Enabling the caching proxy using Annotation

As you already know, Spring provides lots of features, but they are, mostly, disabled. You must enable these feature before using it. If you want to use Spring's cache abstraction in your application, you have to enable this feature. If you are...