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

Dependency injection pattern with Annotation-based configuration


As discussed in the previous two sections, we defined the DI pattern with Java-and XML-based configurations, and these two options define dependencies explicitly. It creates the Spring beans by using either the @Bean annotated method in the AppConfig Java file, or the <bean> element tag in the XML configuration file. By these methods, you can also create the bean for those classes which lie outside the application, that is, classes that exist in third-party libraries. Now let's discuss another way to create Spring beans, and define the dependencies between them by using implicit configuration through the Stereotype annotations.

What are Stereotype annotations?

The Spring Framework provides you with some special annotations. These annotations are used to create Spring beans automatically in the application context. The main stereotype annotation is @Component. By using this annotation, Spring provides more Stereotype meta...