What actor based web frameworks are available for Scala?

Programmer Question

I need to build very concurrent web service which will expose REST based API for JavaScript (front end) and Rails (back end). Web service will be suiting data access API to MongoDB.

I already wrote an initial implementation using NodeJS and would like to try Scala based solution. I'm also considering Erlang, for which every web framework is actor based.

So I'm looking for web framework explicitly build using Actors in order to support massive load of requests I'm very new to Scala and I don't quite understand how Actor might work if almost all frameworks for Scala are based on Java servlets which creates a thread on each request which will just exhaust all resources in my scenario.

Find the answer here