Book Image

Architecting Modern Java EE Applications

By : Sebastian Daschner
Book Image

Architecting Modern Java EE Applications

By: Sebastian Daschner

Overview of this book

Java EE 8 brings with it a load of features, mainly targeting newer architectures such as microservices, modernized security APIs, and cloud deployments. This book will teach you to design and develop modern, business-oriented applications using Java EE 8. It shows how to structure systems and applications, and how design patterns and Domain Driven Design aspects are realized in the age of Java EE 8. You will learn about the concepts and principles behind Java EE applications, and how to effect communication, persistence, technical and cross-cutting concerns, and asynchronous behavior. This book covers Continuous Delivery, DevOps, infrastructure-as-code, containers, container orchestration technologies, such as Docker and Kubernetes, and why and especially how Java EE fits into this world. It also covers the requirements behind containerized, zero-dependency applications and how modern Java EE application servers support these approaches. You will also learn about automated, fast, and reliable software tests, in different test levels, scopes, and test technologies. This book covers the prerequisites and challenges of distributed systems that lead to microservice, shared-nothing architectures. The challenges and solutions of consistency versus scalability will further lead us to event sourcing, event-driven architectures, and the CQRS principle. This book also includes the nuts and bolts of application performance as well as how to realize resilience, logging, monitoring and tracing in a modern enterprise world. Last but not least the demands of securing enterprise systems are covered. By the end, you will understand the ins and outs of Java EE so that you can make critical design decisions that not only live up to, but also surpass your clients' expectations.
Table of Contents (22 chapters)
Title Page
About the Author
About the Reviewer
Customer Feedback
Appendix: Links and further resources

Java EE 8 update and roadmap

Let's have a very high-level overview of what has happened in Java EE version 8. The goal of this version is to improve the developer's experience even more, to streamline the API usage further, and to make Java EE ready for new demands in cloud environments. We saw two completely new JSRs, JSON-B (Java API for JSON Binding) and Security, together with improvements in existing standards. In particular, introducing JSON-B simplifies the integration of JSON HTTP APIs in a vendor-independent way.

The direction of Java EE is to improve the development of enterprise applications in regard to modern environments and circumstances. It turns out that modern environments are not only compatible with Java EE but encourage approaches that have been part of the platform for years. Examples are the separation of the API from the implementation, or application server monitoring.

On the long-term roadmap, there is better support for modern monitoring, health-checks, and resilience. Currently, these aspects have to be integrated in a few lines of codes, as we will see in later chapters. The long-term goal is to make that integration more straightforward. Java EE aims to let developers focus on what they should focus on - solving business problems.