Preface

Microservices is an architecture style and a pattern in which complex systems are decomposed into smaller services that work together to form larger business services. Microservices are services that are autonomous, self-contained, and independently deployable. In today's world, many enterprises use microservices as the default standard to build large service-oriented enterprise applications.

Spring Framework has been a popular programming framework for the developer community for many years. Spring Boot removed the need to have a heavyweight application container, and provides a means to deploy lightweight, serverless applications. Spring Cloud combines many Netflix OSS components and provides an ecosystem to run and manage large-scale microservices. It provides capabilities such as load balancing, service registry, monitoring, Service Gateway, and so on.

However, microservices comes with its own challenges, such as monitoring, managing, distributing, scaling, discovering, and more, especially when deploying at scale. Adopting microservices without addressing common microservices challenges will lead to catastrophic results. The most important part of this book is a technology-agnostic microservices capability model that helps address all common microservice challenges.

The goal of this book is to enlighten readers with a pragmatic approach and provide guidelines to implement responsive microservices at scale. This book will give a holistic view of capabilities that are required to build microservices with examples. This book takes a deep dive into Spring Boot, Spring Cloud, Docker, Mesos, and Marathon. Upon completion of this book, you will understand how Spring Boot will be used to deploy autonomous services by removing the need to have a heavyweight application server. You will also learn different Spring Cloud capabilities, as well as realize the use of Docker for containerization, Mesos, and Marathon for compute resource abstraction and cluster-wide control.

I am sure you will enjoy each and every section of this book. Also, I honestly believe that this book adds tremendous value in successfully conceiving microservices into your business. Throughout this book, I have used practical aspects of microservices implementation by providing a number of examples, including a case study from the travel domain. At the end of this book, you will have learned how to implement microservice architectures using Spring Framework, Spring Boot, and Spring Cloud. These are battle-tested, robust tools for developing and deploying scalable microservices. Written to the latest specifications of Spring, with the help of this book, you'll be able to build modern, internet-scale Java applications in no time.