Here's a curious fact. Deadbolt 2 Scala has equivalent capabilities to Deadbolt 2 Java, but with less code and fewer actions. Specifically, there are the same number of template tags, but quite a few fewer actions. Play 2 for Scala uses action composition in place of annotation-driven interceptors, and so there are no controller-level constraints. As a result, there is no need for the equivalents of @DeadboltDeferred, @BeforeAccess or @Unrestricted. These represent 33% of the interceptors of D2 Java.