refactor.scala

def index(id:String) = Action {
  getFirstData(id)
}
private def getFirstData(id:String) = {
  Cache.get(id) match {
    case Some(id2) => getSecondData(id2)
    case None => NotFound
  }
}
private def getSecondData(id2:String) = {
  Cache.get(id2) match {
    case Some(result) => Ok(result)
    case None => NotFound
  }
}

sample.scala

def index(id:String) = Action {
  Cache.get(id) match {
    case Some(id2) => {
      Cache.get(id2) match {
        case Some(result) => Ok(result)
        case None => NotFound
      }
    }
    case None => NotFound
  }
}