Book Image

Learning Concurrent Programming in Scala - Second Edition

By : Aleksandar Prokopec
Book Image

Learning Concurrent Programming in Scala - Second Edition

By: Aleksandar Prokopec

Overview of this book

Scala is a modern, multiparadigm programming language designed to express common programming patterns in a concise, elegant, and type-safe way. Scala smoothly integrates the features of object-oriented and functional languages. In this second edition, you will find updated coverage of the Scala 2.12 platform. The Scala 2.12 series targets Java 8 and requires it for execution. The book starts by introducing you to the foundations of concurrent programming on the JVM, outlining the basics of the Java Memory Model, and then shows some of the classic building blocks of concurrency, such as the atomic variables, thread pools, and concurrent data structures, along with the caveats of traditional concurrency. The book then walks you through different high-level concurrency abstractions, each tailored toward a specific class of programming tasks, while touching on the latest advancements of async programming capabilities of Scala. It also covers some useful patterns and idioms to use with the techniques described. Finally, the book presents an overview of when to use which concurrency library and demonstrates how they all work together, and then presents new exciting approaches to building concurrent and distributed systems. Who this book is written for If you are a Scala programmer with no prior knowledge of concurrent programming, or seeking to broaden your existing knowledge about concurrency, this book is for you. Basic knowledge of the Scala programming language will be helpful.
Table of Contents (19 chapters)
Learning Concurrent Programming in Scala - Second Edition
About the Author
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Working with actors

In the actor programming model, the program is run by a set of concurrently executing entities called actors. Actor systems resemble human organizations, such as companies, governments, or other large institutions. To understand this similarity, we consider the example of a large software company.

In a software company such as Google, Microsoft, Amazon, or Typesafe, there are many goals that need to be achieved concurrently. Hundreds or thousands of employees work toward achieving these goals, and are usually organized in a hierarchical structure. Different employees work at different positions. A team leader makes important technical decisions for a specific project, a software engineer implements and maintains various parts of a software product, and a system administrator makes sure that the personal workstations, servers, and various equipment are functioning correctly. Many employees, such as the team leader, delegate their own tasks to other employees who are lower...