Choosing an ExecutorService for application(use own thread pool instead of Scala default )

ExecutorServices.scala

import java.util.concurrent.{Executors, ForkJoinPool}

import scala.concurrent.ExecutionContext

//For  IO intensive applications
object MyExecutionContext {

  private val concurrency = Runtime.getRuntime.availableProcessors()

  implicit val commonThreadPool: ExecutionContext = ExecutionContext.fromExecutor(Executors.newCachedThreadPool())

}

//heavy/blocking io intensive applications
object IOExecutionContext {

  private val concurrency = Runtime.getRuntime.availableProcessors()

  implicit val ioThreadPool: ExecutionContext = ExecutionContext.fromExecutor(Executors.newFixedThreadPool(concurrency * 10))

}


//for cpu intensive applications
object FJExecutionContext {

  private val concurrency = Runtime.getRuntime.availableProcessors()

  implicit val forkJoinThreadPool: ExecutionContext =   ExecutionContext.fromExecutor(new ForkJoinPool(concurrency))

}


//Example :use own thread pool instead of scala default 
  import MyExecutionContext.commonThreadPool
  val futureResult = Future{2 + 4 }