Caching Webservice call wrapper

cachedws.scala

object CachedWS {
  def apply[T](key: String)(f: => Promise[Option[T]])(implicit m: scala.reflect.ClassManifest[T]): Promise[Option[T]] =
    Cache.getAs[T](key).map(t => Promise.pure(Some(t))).getOrElse{f.map(_.map{ t => Cache.set(key, t); t})}
}