Book Image

Akka Cookbook

By : Vivek Mishra, Héctor Veiga Ortiz
Book Image

Akka Cookbook

By: Vivek Mishra, Héctor Veiga Ortiz

Overview of this book

Akka is an open source toolkit that simplifies the construction of distributed and concurrent applications on the JVM. This book will teach you how to develop reactive applications in Scala using the Akka framework. This book will show you how to build concurrent, scalable, and reactive applications in Akka. You will see how to create high performance applications, extend applications, build microservices with Lagom, and more. We will explore Akka's actor model and show you how to incorporate concurrency into your applications. The book puts a special emphasis on performance improvement and how to make an application available for users. We also make a special mention of message routing and construction. By the end of this book, you will be able to create a high-performing Scala application using the Akka framework.
Table of Contents (18 chapters)
Title Page
About the Authors
About the Reviewer
Customer Feedback

Scheduling an operation at a specified interval 

There are some situations where we want an operation to occur at a specified time or occur repeatedly after an interval. This is like a cron job. Let's go through the recipe.

Getting ready

To step through this recipe, we need to import our Hello-Akka project into the IDE and create a com.packt.chapter5 package in which we will put all the code.

How to do it…

  1. Let's create a file, say, ScheduleOperation.scala in the com.packt.chapter5 package.
  2. Add the following imports to the top of the file:
        import scala.concurrent.duration._
  1. Create a test application, as follows, in which we create an actor system and schedule the operation:
         object ScheduleOperation extends App {
         val system = ActorSystem("Hello-Akka")
         import system.dispatcher
         system.scheduler.scheduleOnce(10 seconds)
           { println(s"Sum of (1 + 2) is ${1 + 2}")