Book Image

Learning Scala Programming

By : Vikash Sharma
Book Image

Learning Scala Programming

By: Vikash Sharma

Overview of this book

Scala is a general-purpose programming language that supports both functional and object-oriented programming paradigms. Due to its concise design and versatility, Scala's applications have been extended to a wide variety of fields such as data science and cluster computing. You will learn to write highly scalable, concurrent, and testable programs to meet everyday software requirements. We will begin by understanding the language basics, syntax, core data types, literals, variables, and more. From here you will be introduced to data structures with Scala and you will learn to work with higher-order functions. Scala's powerful collections framework will help you get the best out of immutable data structures and utilize them effectively. You will then be introduced to concepts such as pattern matching, case classes, and functional programming features. From here, you will learn to work with Scala's object-oriented features. Going forward, you will learn about asynchronous and reactive programming with Scala, where you will be introduced to the Akka framework. Finally, you will learn the interoperability of Scala and Java. After reading this book, you'll be well versed with this language and its features, and you will be able to write scalable, concurrent, and reactive programs in Scala.
Table of Contents (21 chapters)
Title Page
Packt Upsell
Contributors
Preface
Index

Chapter 13. Concurrent Programming in Scala

 

"Yesterday is not ours to recover, but today is to try and tomorrow is to win or lose."

- Anonymous

The idea that modern computers with multicore architectures give better performance is based on the fact that multiple processors can run separate processes simultaneously. Each process can run more than one thread to complete specific tasks. Picturing this, we can write programs with multiple threads working simultaneously to ensure better performance and responsiveness. We call this concurrent programming. In this chapter, our goal is to understand Scala's offerings in concurrent programming. There are multiple ways we can use constructs to write concurrent programs. We'll learn about them in this chapter. Let's check out what will be here for us:

  • Concurrent programming
  • Building blocks of concurrency:
    • Process and threads
    • Synchronization and locks
    • Executor and ExecutionContext
    • Lock free programming
  • Asynchronous programming using Futures and Promises
  • Parallel...