John Carnell - Spring Microservices in Action, Second Edition

Second Edition

John Carnell and Illary Huaylupo Snchez

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ISBN: 9781617296956

I dedicate this book to all women who are currently pursuing STEM careers.

With hard work, everything is possible.

This book is part of a dream to contribute to the development of the field I am most passionate aboutcomputer science, and particularly, software development. These fields show their extraordinary importance in the interconnected and global present. We see the incredible transformations of these disciplines every day, in all areas of human activities. But why write about microservices architecture when there are a lot of other topics to write about?

The word microservices has a lot of interpretations. But in this book, I define a microservice as a distributed, loosely coupled software service that carries out a small number of well-defined tasks. Microservices crept up as an alternative to monolithic applications to help combat the traditional problems of complexity in a large code base by decomposing that down into small, well-defined pieces.

During my 13 years of experience, I have dedicated myself to software development, working with different languages and different types of software architectures. When I started, I used architectures that today are practically obsolete. The contemporary world forces us to update continually, and innovation in the software development field advances at an accelerated pace. Because of this search for up-to-date knowledge and practices, I decided to get involved in the world of microservices some years ago. Since then, it is the architecture I have used the most because of the advantages it provides (advantages such as scalability, speed, and maintainability). Successfully venturing into the microservices field prompted me to take on the task of writing this book as an opportunity to systematize and share what I have learned.

As a software developer, I discovered how important it is to continually research and apply new knowledge to development. Before undertaking this book, I decided to share my findings and started publishing microservices articles on the blog platform of a software development company I worked for in Costa Rica, my home country. While I was writing these articles, I realized I had found a new passion and purpose in my professional career. A few months after writing one of my articles, I received an email from Manning Publications, offering me the opportunity to write the second edition of this book that I share with you today.

The first edition of this book was written by John Carnell, a consummate professional with many years of software development experience. I wrote this second edition from this basis, combined with my own interpretation and understanding. The second edition of Spring Microservices in Action will allow you to implement diverse design patterns that will help you create a successful microservices architecture using Spring. Its a framework that offers out-of-the-box solutions for many of the common development problems you will run into as a microservice developer. Now, lets start this incredible journey into the world of microservices with Spring.

I am deeply grateful for the opportunity to work on this book, which has allowed me to share my knowledge and to learn at the same time. I am also grateful to Manning Publications for trusting my work and allowing me to share it with so many people; most importantly, to Michael Stephens for offering me this fantastic opportunity; to John Carnell for his support, work, and knowledge; to Robert Wenner, my technical development editor, for his valuable contributions; and to Lesley Trites, my editor, for accompanying me throughout the process with her valuable help.

I would also like to thank Stephan Pirnbaum and John Guthrie, who, as my technical reviewers, checked my work and ensured the books overall quality. Thanks go also to my project editor, Deirdre Hiam; my copyeditor, Frances Buran; my proofreader, Katie Tennant; my reviewing editor, Aleks Dragosavljevic; and to all the reviewers (Aditya Kumar, Al Pezewski, Alex Lucas, Arpit Khandelwal, Bonnie Malec, Christopher Kardell, David Morgan, Gilberto Taccari, Harinath Kuntamukkala, Iain Campbell, Kapil Dev S, Konstantin Eremin, Krzysztof Kamyczek, Marko Umek, Matthew Greene, Philippe Vialatte, Pierre-Michel Ansel, Ronald Borman, Satej Kumar Sahu, Stephan Pirnbaum, Tan Wee, Todd Cook, and Vctor Durn)your suggestions helped make this a better book.

I want to thank my mom, dad, and my entire family, who supported me and encouraged me to pursue my dreams, and who, by their dedication to work as an example, helped me become the professional I am today. My gratitude also goes out to Eli, who was always by my side on those long days of work, and to my friends, who always trusted me and encouraged me throughout this process.