Preface

JBoss Application Server has been, de facto, the open source platform to provision enterprise Java applications. The commercial platform that supported the release of the application server is JBoss Enterprise Application Platform (JBoss EAP), which has just hit its 7th release.

This release contains the advanced features developed for the upstream project—now called WildFly Application Server (currently at version 10)—such as the newly designed web subsystem, Undertow, which uses the latest non-blocking I/O features of Java to provide improved scalability and performance. Undertow also supports the latest standards for web applications, such as HTTP/2, HTTP Upgrade, and WebSockets.

Another change in the application server platform is the messaging subsystem, which is now based on the unified messaging technology for Red Hat products, called Apache ActiveMQ Artemis. Active MQ Artemis enables customers to exchange messages between JBoss EAP 6 and 7, while preserving the performance, scalability, and reliability of the EAP 6's HornetQ.

JBoss EAP 7 also features several significant management updates by giving administrators the ability to see and manage the configuration of JBoss EAP servers offline, or using the new server suspend mode to gracefully shut down the servers only after completing the in-flight transactions.

The preceding list is a non-exhaustive collection of features that will be discussed throughout this book, which will guide you through the core aspects of the Enterprise server, focusing on practical use cases and describing how to solve common issues.