Nirmal Singh - Building Microservices with Micronaut®: A quick-start guide to building high-performance reactive microservices for Java developers

A quick-start guide to building high-performance reactive microservices for Java developers

Nirmal Singh

Zack Dawood

BIRMINGHAMMUMBAI

Copyright 2021 Packt Publishing

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To my dearest loving wife, Rajveer, for walking the journey of writing this book with me. You are the wind beneath my wings.Nirmal Singh

To my wife, Waheetha, and son, Aaryan, for persuading me to complete the book. Behind every author there is a supporting and loving family.Zack Dawood

In March of 2018, Micronaut co-founder, Graeme Rocher, delivered a keynote address at Madrid's Greach conference in which he introduced a brand-new, open-source, full-stack, JVM software development framework. Although Graeme and the rest of the core development team at the Framework's home, Object Computing, knew they had built a groundbreaking toolset that was poised to revolutionize the way microservices and serverless applications performed, they could not have predicted the incredible amount of enthusiasm and support the Framework and the team would quickly receive following the product's launch.

By shifting framework infrastructure into a compiler feature, the Micronaut framework has significantly transformed the way developers view startup time and memory consumption when building microservices and serverless applications. It has upended the way developers approach framework design in server-side Java and rewritten the book on how frameworks should be built in the post-Java EE world.

The Framework is being used at SmartThings, StainlessAI, Minecraft, and many other organizations around the globe. It has been featured at tech conferences around the world, reached a Trial status in the 'Languages and Frameworks' section of ThoughtWorks' Technology Radar, received its own hipster in honor of JHipster's Micronaut Blueprint, and had more than 60,000 apps created on Micronaut Launch, an online tool for quickly and easily creating Micronaut applications.

It is not at all an exaggeration to say that the Micronaut framework is a hit!

In 2020, we launched the Micronaut Foundation, a not-for-profit company that oversees the software's roadmap and development, best practices and processes, repository control, documentation and support, and fundraising. Our goals? To ensure technical innovation and advancement of the Framework, to evangelize and promote the Framework as a leading technology in the JVM space, and to build and support an ecosystem of complementary documentation, functionality, and services.

The Foundation is led by a Technology Advisory Board made up of thought leaders and representatives from different sectors of the technology industry. Bringing together a group of folks with diverse experiences, priorities, and areas of expertise is a huge win for the technology and the community.

Object Computing and the Micronaut Foundation highly value the equal opportunity represented by open-source technologies; working together with members of the Micronaut community to share information, knowledge, and expertise can only further promote success for everyone. Thus, when Zack Dawood and Nirmal Singh approached us and told us they were writing a book about the Framework, we were delighted and happy to help in any way. Building Microservices with Micronaut is a great example of community members channeling their enthusiasm for the Micronaut framework into a resource that we know will lead to innovative and exciting solutions with the power to change the world.

Whether you've been a fan of the Micronaut framework since its inception or you're just getting started by picking up this book, you're part of a community full of people and organizations that are passionate about creating the very best technical solutions possible developers and tech enthusiasts who embrace the idea that all of us is better than any one of us.

We are certain that you will find the Micronaut framework to be a game-changer, and with Zack and Nirmal's guidance, you will soon find yourself enjoying all the benefits the Framework offers. And where your journey takes you from there? Well, whatever you do, you can take pride in the fact that you're a pioneer in a future that runs on intelligent compilers, lightning-fast runtimes, and technical solutions limited only by your imagination.

Foreword by The Micronaut Foundation

Nirmal Singh is an entrepreneurial-spirited renaissance mind technology leader, with 10+ years of broad and unique cross-domain experience in handling complex inter-disciplinary requirements, leading high-performing software development teams, and delivering robust software solutions. He has worked in various techno-functional roles, serving health-tech, fin-tech, retail, and social commerce verticals in both product and consulting engagements. He currently leads a product engineering group at CGI to re-engineer a classic mission-critical wealth application.

I would like to extend my gratitude to my loving wife for her patience and encouragement throughout the journey of writing this book. Without her, this would not have been possible.

Zack Dawood is a Canada-based technologist, leader, author, and speaker. Zack has 16+ years of experience in IT software product development, big data, machine learning, mobile app development, blockchain, payments, Agile, enterprise architecture, and DevOps. Zack is highly certified; his key certifications include Certified Agile Leader, Certified Scrum Professional, SAFe, ITIL, Microsoft Certified Professional, and TOGAF. He has also been a Distinguished Toastmaster