Simple retries with future-based networking code in Scala (with back-off)

retry-with-backoff.scala

def networkRequestWithRetries()(implicit as: ActorSystem): Future[String] = {
  networkRequest().recoverWith {
    case NetworkException =>
      println("retrying")
      after(2.seconds, as.scheduler, global, Future.successful(1)).flatMap { _ =>
        networkRequestWithRetries()
      }
    
    case t: Throwable         => throw t
  }
}