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

Summary


In this chapter, we have seen the Spring AOP Framework and used design patterns behind this module. AOP is a very powerful paradigm and it complements the Object oriented programming. Aspect-Oriented Programming (AOP) modularizes cross-cutting concerns such as Logging, Security and Transaction. An aspect is a Java class annotated with @Aspect annotation. It defines a module containing the crosscutting behavior. This module separates from the application's business logic. We can reuse it in our application with other business modules without making any changes.

In Spring AOP, behavior is implemented as an advice method. You have learned in Spring, there are five types as Before, AfterThrowing, AfterReturning, After and Around. Around advice is a very powerful advice, there are interesting features implemented by using Around advice. You've learned how to weave these advices using load time weaving.

You have seen how to declare Pointcuts in the Spring application and pointcuts select...