The combination of EJB 3.2 and CDI managed Beans is still the leanest possible choice …in Java EE 7:
The post "Dependency Injection Performance" measures the performance differences between EJB and …ApplicationScoped managed beans.
NEW workshop: Building HTML 5 Applications With Angular 2
Full week in December 2016: from Java EE 7 Bootstrap, Effective, Architectures over Testing to Microservices
On demand workshops: Java EE 7: Bootstrap, Effective, Testing and Microservices available for streaming.