> mutable state on the ApplicationController and the models Well, mutable state on the models seems pretty fair, unless I'm misunderstanding you. It's rather

> mutable state on the ApplicationController and the models Well, mutable state on the models seems pretty fair, unless I'm misunderstanding you. It's rather unforgivable on ApplicationController though. Edit: and the slow startup time doing TDD with JRuby was my primary complaint when I developed in it. Although iirc you can use nailgun or something to keep the JVM active and mitigate that pain.