How does dropwizard compare to spray or scalatra? [closed]

As it currently stands, this question is not a good fit for our Q&A format. We expect answers to be supported by facts, references, or expertise, but this question will likely solicit debate, arguments, polling, or extended discussion. If you feel that this question can be improved and possibly reopened, visit the help center for guidance. Closed 11 years ago.

How does the above 3 frameworks compare in terms of

1) Performance 2) Ease of Us开发者_开发技巧e 3) Real world tests

and other relevant parameters?