Artur Jurat azhur

Thread Pools

Thread pools on the JVM should usually be divided into the following three categories:

CPU-bound
Blocking IO
Non-blocking IO polling

Each of these categories has a different optimal configuration and usage pattern.

Applied Functional Programming with Scala - Notes

1. Mastering Functions

A function is a mapping from one set, called a domain, to another set, called the codomain. A function associates every element in the domain with exactly one element in the codomain. In Scala, both domain and codomain are types.

val square : Int => Int = x => x * x

JDK 8 Released

Most of us won’t be able to use/deploy JDK 8 in production for a looong time. But that shouldn’t stop us from using it, right?

It should be possible to sneak in JDK 8 in the back way, the same way we snuck in Groovy and other libraries we wanted to use.

The Test Suite to the rescue

The Maven compiler plugin run in two separate lifecycles, compile and testCompile. Those can be configured separately.

	/**
	* Copyright (C) 2009-2014 Typesafe Inc. <http://www.typesafe.com>
	*/
	package akka.contrib.mailbox

	import scala.concurrent.duration._
	import java.util.concurrent.atomic.AtomicInteger
	import java.util.concurrent.atomic.AtomicLong
	import com.typesafe.config.Config
	import akka.actor.{ ActorContext, ActorRef, ActorSystem, ExtendedActorSystem }

	class MyManagedResource extends ResourceController[String] {
	def index = Action(Ok("index"))

	def newScreen = Action(Ok("new"))

	def create = Action {
	Redirect(MyInjectableResource.reverseRoutes.index())
	}

	def show(id: String) = Action(Ok("Show " + id))