Foreword
Red Hat, and JBoss before it, have been at the forefront of helping to shape the evolution of enterprise Java since the early 2000s. With an emphasis on open source and growing communities, these two companies have collaborated with other vendors, consultants, individuals, and standards organizations to ensure Java and some of its most popular frameworks have been developed to address new technological waves and to keep Java one of the most popular programming languages around. As a result, you can find Java being used in areas as diverse as IoT applications, web services, health care, and financial services. Yet when the cloud came along it presented some problems that traditional Java frameworks and even the Java Virtual Machine struggled to match.
Red Hat was the first vendor to marry a Java Enterprise Edition application server with the cloud through OpenShift. It continued this trend with all of its Java portfolio of projects and products. However, when the world moved to Linux Containers and then to Kubernetes, the entire application development paradigm for all programming languages moved toward immutability. Java has always been about enabling dynamic applications, and the frameworks built over many years take advantage of that aspect. Addressing this problem space and ensuring that Java remains a viable option for cloud developers requires a change of mindset, new tools, and new frameworks.
When we started to work on Quarkus in early 2018, the team had carte ...
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