Markus Eisele - Modernizing Enterprise Java: A Concise Cloud Native Guide for Developers

With Early Release ebooks, you get books in their earliest formthe authors raw and unedited content as they writeso you can take advantage of these technologies long before the official release of these titles.

This will be the foreword of the final book.

If you have comments about how we might improve the content and/or examples in this book, or if you notice missing material within this chapter, please reach out to the authors at .

Unless youve been in deep seclusion for the past few years, you cant have missed the fact that the enterprise world has been moving towards adopting cloud technologies. This includes approaches such as microservices, Kubernetes, Linux containers and so much more. However, despite the fact Java has been the mainstay of enterprise developers for over two decades, it hasnt been immediately obvious that it has such a significant role in this new cloud world. Java and the frameworks and stacks built with it are often viewed as monolithic, slow to start, consuming a lot of memory or disk space and the dynamic nature of Java itself seems to fly in the face of Kubernetes immutability assumptions. For the many millions of Java developers out there this could pose a serious problem, especially if we need to to try recreate in another language the richness of the Java ecosystem of IDEs, 3rd party libraries etc. which have helped to make developers so incredibly productive over the years.

Fortunately the Java community of developers and vendors has met the challenge of cloud native Java head on. Changes in the Java language, frameworks etc. have been made and adopted quickly, allowing Java developers to bring their skills to this new frontier. These include technologies such as Quarkus, GraalVM, Eclipse Vert.x, Spring Boot and OpenJDK. However, using them efficiently within a cloud environment is not always obvious. Where does CI/CD come in to play? What about Linux container images and Kubernetes? Monitoring, observability, health checking of your microservices, and so much more can appear to be a daunting challenge, even for the most experienced developer. Fortunately, in this book, Markus and Natale have provided the answers. Within these pages, youll be taken through a journey of understanding and appreciation of whats happening within the Java world to better embrace cloud and also those technologies within the cloud which may not be familiar and yet are important to ensure your distributed microservices function well. Whether youre an experienced Java developer or a relative novice, this book is a great starting point for your journey into the cloud and beyond!

Mark LittleVice President, Middleware Engineering, Red Hat