Book Image

Go Design Patterns

By : Mario Castro Contreras
Book Image

Go Design Patterns

By: Mario Castro Contreras

Overview of this book

Go is a multi-paradigm programming language that has built-in facilities to create concurrent applications. Design patterns allow developers to efficiently address common problems faced during developing applications. Go Design Patterns will provide readers with a reference point to software design patterns and CSP concurrency design patterns to help them build applications in a more idiomatic, robust, and convenient way in Go. The book starts with a brief introduction to Go programming essentials and quickly moves on to explain the idea behind the creation of design patterns and how they appeared in the 90’s as a common "language" between developers to solve common tasks in object-oriented programming languages. You will then learn how to apply the 23 Gang of Four (GoF) design patterns in Go and also learn about CSP concurrency patterns, the "killer feature" in Go that has helped Google develop software to maintain thousands of servers. With all of this the book will enable you to understand and apply design patterns in an idiomatic way that will produce concise, readable, and maintainable software.
Table of Contents (17 chapters)
Go Design Patterns
About the Author
About the Reviewer
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Chapter 9. Concurrency Patterns - Barrier, Future, and Pipeline Design Patterns

Now that we are familiar with the concepts of concurrency and parallelism, and we have understood how to achieve them by using Go's concurrency primitives, we can see some patterns regarding concurrent work and parallel execution. In this chapter we'll see the following patterns:

  • Barrier is a very common pattern, especially when we have to wait for more than one response from different Goroutines before letting the program continue

  • Future pattern allows us to write an algorithm that will be executed eventually in time (or not) by the same Goroutine or a different one

  • Pipeline is a powerful pattern to build complex synchronous flows of Goroutines that are connected with each other according to some logic

Take a quick look at the description of the three patterns. They all describe some sort of logic to synchronize execution in time. It's very important to keep in mind that we are now developing concurrent structures...