Preface

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

Who this book is for

Getting Started with Spring Microservices is ideal for Spring developers who want to use design patterns to solve common design problems and build cloud-ready, Internet-scale applications, and simple RESTful services.

 

What this book covers

Chapter 1, Getting Started with the Spring Framework 5.0 and Design Patterns, gives an overview of the Spring 5 Framework and all new features of the Spring 5 Framework, including some basic examples of DI and AOP. You’ll also get an overview of the great Spring portfolio.

Chapter 2, Overview of GOF Design Patterns - Core Design Patterns, gives an overview of the Core Design Pattern of the GoF Design Patterns family, including some best practices for an application design. You'll also get an overview of the common problems solving with design patterns.

Chapter 3, Wiring Beans using Dependency Injection Pattern, explores dependency injection pattern and detail about the configuration of Spring in an application, showing you various ways of configurations in your application. This includes a configuration with XML, Annotation, Java, and Mix.

Chapter 4, Spring Aspect Oriented Programming with Proxy and Decorator Pattern, explores how to use Spring AOP to decouple cross-cutting concerns from the objects that they service. This chapter also sets the stage for later chapters where you'll use AOP to provide declarative services such as transactions, security, and caching.

Chapter 5, Accessing Database with Spring and JDBC Template Patterns, explores how to access the data with Spring and JDBC; here, you’ll see how to use Spring's JDBC abstraction and JDBC Template to query relational databases in a way that is far simpler than native JDBC.

Chapter 6, Improving Application Performance Using Caching Patterns, shows how to improve application performance by avoiding the database altogether if the data needed is readily available. So, I will show you how Spring provides support for caching data.

Chapter 7, Implementing Reactive Design Patterns, explores the Reactive Programming Model, which is programming with asynchronous data streams. You'll see how the Reactive System is implemented in the Spring Web Module.

Chapter 8, Implementing Concurrency Patterns, takes a closer look at concurrency when handling multiple connections inside a web server. As outlined in our architectural model, request handling is decoupled from application logic.

Chapter 9, Demystifying Microservices, gives you an introduction to microservices. This chapter covers the background, evaluation, and fundamental concepts of microservices.

Chapter 10, Related Architecture Styles and Use Cases, covers the relationship with Service-Oriented Architecture, the concepts of cloud native and Twelve Factor applications, and explains some of the common use cases.

Chapter 11, Building Microservices with Spring Boot, introduces building REST and message-based microservices using the Spring Framework and how to wrap them with Spring Boot. In addition, we will also explore some core capabilities of Spring Boot.

Chapter 12, Scale Microservices with Spring Cloud Components, shows you how to scale previous examples using Spring Cloud stack capabilities. It details the architecture and different components of Spring Cloud and how they integrate together.

Chapter 13, Logging and Monitoring Microservices, covers the importance of logging and monitoring aspects when developing microservices. Here, we look at the details of some of the best practices when using microservices, such as centralized logging and monitoring capabilities using open source tools and how to integrate them with Spring projects.

Chapter 14, Containerizing Microservices with Docker, explains containerization concepts in the context of microservices. Using Mesos and Marathon, it demonstrates next-level implementation to replace the custom life cycle manager for large deployments.

Chapter 15, Scaling Dockerized Microservices with Mesos and Marathon, explains auto-provisioning and deployment of microservices. Here, we will also learn how to use Docker containers in the preceding example for large-scale deployments.

To get the most out of this book

This book can be read without a computer or laptop at hand, in which case you need nothing more than the book itself. Although to follow the examples in the book, you need Java 8, which you can download from http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html. You will also need your favorite IDE for the examples, but I have used the Software Spring Tool Suite; download the latest version of Spring Tool Suite (STS) from https://spring.io/tools/sts/allaccording to your system OS. The Java 8 and STS work on a variety of platforms--Windows, macOS, and Linux.

 

Other software components required are as follows:

• Spring Cloud Dalston RELEASE
• elasticsearch-1.5.2
• kibana-4.0.2-darwin-x64
• logstash-2.1.2
• Docker version (17.03.1-ce)
• Docker Hub
• Mesos version 1.2.0
• Docker version 17.03.1-ce
• Marathon version 3.4.9

Download the example code files

 

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The code bundle for the book is also hosted on GitHub at https://github.com/PacktPublishing/Building-Microservices-with-Spring. In case there's an update to the code, it will be updated on the existing GitHub repository.

We also have other code bundles from our rich catalog of books and videos available at https://github.com/PacktPublishing/. Check them out!

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