Book Image

Effective Concurrency in Go

By : Burak Serdar
Book Image

Effective Concurrency in Go

By: Burak Serdar

Overview of this book

The Go language has been gaining momentum due to its treatment of concurrency as a core language feature, making concurrent programming more accessible than ever. However, concurrency is still an inherently difficult skill to master, since it requires the development of the right mindset to decompose problems into concurrent components correctly. This book will guide you in deepening your understanding of concurrency and show you how to make the most of its advantages. You’ll start by learning what guarantees are offered by the language when running concurrent programs. Through multiple examples, you will see how to use this information to develop concurrent algorithms that run without data races and complete successfully. You’ll also find out all you need to know about multiple common concurrency patterns, such as worker pools, asynchronous pipelines, fan-in/fan-out, scheduling periodic or future tasks, and error and panic handling in goroutines. The central theme of this book is to give you, the developer, an understanding of why concurrent programs behave the way they do, and how they can be used to build correct programs that work the same way in all platforms. By the time you finish the final chapter, you’ll be able to develop, analyze, and troubleshoot concurrent algorithms written in Go.
Table of Contents (13 chapters)

Practical uses of atomics

Here are a few examples of using atomics. These are simple race-free uses of atomics in different scenarios.


Atomics can be used as efficient concurrency-safe counters. The following program creates many goroutines, each of which will add 1 to the shared counter. Another goroutine loops until the counter reaches 10000. Because of the use of atomics here, this program is race-free, and it will always terminate by eventually printing 10000:

var count int64
func main() {
     for i := 0; i < 10000; i++ {
          go func() {
               atomic.AddInt64(&count, 1)
     for {