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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Reactors, event streams, and channels form the cornerstone of the reactor programming model. These basic primitives allow composing powerful communication abstractions. In this section, we go through some of the basic communication protocols that the Reactors framework implements in terms of its basic primitives. What these protocols have in common is that they are not artificial extensions of the basic model. Rather, they are composed from basic abstractions and other simpler protocols.

We start with one of the simplest protocols, namely the server-client protocol. First, we show how to implement a simple server-client protocol ourselves. After that, we show how to use the standard server-client implementation provided by the Reactors framework. In the later sections on protocols, we will not dive into the implementation, but instead immediately show how to use the protocol predefined in the framework.

This approach will serve several purposes. First, you should get an idea of how...