The Play Framework at LinkedIn
>Rapid iteration: change the code, refresh the page, and see the change instantly.I see the play people tout this all the time, and I assume it is in reaction to an assumption of dynamic language people that you have to manually compile every time you make a change.  But it is really misleading.  You make a change, refresh the page, and wait 10 seconds for it to compile and reload.  Iteration speed was just as poor with play as it was with bloated J2EE monsters on jboss.