The article "Threading and Concurrency" discusses asynchronous processing and parallelization in Java EE with EJB 3.1 (@Asynchronous and timers), Servlets and even with a JCA connector implementation.
NEW online workshop: Web Components training (online)
Airport MUC workshops: Java EE 8, Java 9: Bootstrap, Effective, Architectures, Single Page Apps, Progressive Web Apps, HTML 5, ES 6, CSS 3 and Microservices
Podcast: airhacks.fm and newsletter: airhacks.news
A book about rethinking Java EE Patterns