Exception handling for timing CouchBase fetch
You could use Try utility.

But the main concern is that it doesn't support finally statement out-of-the-box.

This can be achieved with some Try enhancement's value class (by Viktor Klang):

implicit class TryOps[T](val t: Try[T]) extends AnyVal {
  def eventually[Ignore](effect: =&gt; Ignore): Try[T] = {
    val ignoring = (_: Any) =&gt; { effect; t }
    t transform (ignoring, ignoring)
  }
}


Consider this code:

val timer = couchbaseMetricsTimer.time()
val tryClient =
  Try(couchBaseClient.get(key)) map { //convert success result
    Option(_)
  } recover { //process failure result
    case e: Exception =&gt; couchbaseFailureMetricCounter.inc(); throw e
  } eventually { //perform "finally" block
    timer.stop()
  }

//return actual result
tryClient.get


It's not less, by more idiomatic, so it's up to you which way to choose.

Here are more references to discover.

Note: you can put TryOps into package object of some of your root package f.e. com.mycompany, and then you can use it everywhere in your project.