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

Creational design patterns

Let's look at the underlying design patterns of this category and how Spring Framework adopts them to provide loose coupling between components and create and manage the lifecycle of Spring components. Creational design patterns are associated with the method of object creation. The creation logic of the object is hidden to the caller of this object.

We are all aware of how to create an object using the new keyword in Java, as follows:

     Account account = new Account(); 

But this way is not suitable for some cases, because it is a hardcoded way of creating an object. It is also not a best practice to create an object because the object might be changed according to the nature of the program. Here, the creational design pattern provides the flexibility to create an object according to the nature of the program.

Now let's look at the different design patterns under this category.

Factory design pattern

Define an interface for creating an object, but let subclasses decide...