ZIO learning - using cached / published by https://github.com/dacr/code-examples-manager #b7f0504d-7bdd-4c7a-85e1-d460fad0e696/4223c46feae8b1570b41ccde83b2d0d36b12ca51

zio-learning-30-cached-1.sc

// summary : ZIO learning - using cached
// keywords : scala, cached, zio, @testable
// publish : gist
// authors : David Crosson
// license : Apache NON-AI License Version 2.0 (https://raw.githubusercontent.com/non-ai-licenses/non-ai-licenses/main/NON-AI-APACHE2)
// id : b7f0504d-7bdd-4c7a-85e1-d460fad0e696
// created-on : 2022-01-26T09:11:32+01:00
// managed-by : https://github.com/dacr/code-examples-manager
// run-with : scala-cli $file

// ---------------------
//> using scala  "3.2.2"
//> using dep "dev.zio::zio:2.0.13"
// ---------------------

import zio.*

object Encapsulated extends ZIOAppDefault {
  val run = for {
    ref            <- Ref.make(0)
    getAndIncrement = ref.modify(n => (n, n + 1))
    cached         <- getAndIncrement.cached(30.seconds)
    a              <- cached
    b              <- cached
    c              <- cached
    _              <- Console.printLine(s"$a $b $c (0 everywhere if it works)")
  } yield ()
}

Encapsulated.main(Array.empty)