One of the more performant clients for using Scala and the Redis NoSQL database is "rediscala," which has been quite active on GitHub this month. It is reactive, typesafe, and non-blocking:
• Reactive : Redis requests/replies are wrapped in Futures.
• Typesafe : Redis types are mapped to Scala types.
• Fast : Rediscala uses redis pipelining. Blocking redis commands are moved into their own connection. A worker actor handles I/O operations (I/O bounds), another handles decoding of Redis replies (CPU bounds).
-- From the GitHub Page
It already supports the primary Redis Commands and will add Scripting and Server soon.