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
About Packt

Types of dependency injection patterns

The following are the types of dependency injections that could be injected into your application:

  • Constructor-based dependency injection
  • Setter-based dependency injection

Constructor-based dependency injection pattern

Dependency injection is a design pattern to resolve the dependencies of dependent classes, and dependencies are nothing but object attributes. The injector has to be constructed for the dependent objects by using one of the ways constructor injection or setter injection. A constructor injection is one of the ways of fulfilling these object attributes at the time of creation to instantiate the object. An object has a public constructor that takes dependent classes as constructor arguments to inject the dependencies. You can declare more than one constructor into the dependent class. Earlier, only the PicoContainer Framework is used a constructor-based dependency injection to resolve dependencies. Currently, the Spring Framework also supports...