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
Customer Feedback


Channels are the second primitive in the language that allows us to write concurrent applications. We have talked a bit about channels in the Communicating sequential processes section.

Channels are the way we communicate between processes. We could be sharing a memory location and using mutexes to control the processes' access. But channels provide us with a more natural way to handle concurrent applications that also produces better concurrent designs in our programs.

Our first channel

Working with many Goroutines seems pretty difficult if we can't create some synchronization between them. The order of execution could be irrelevant as soon as they are synchronized. Channels are the second key feature to write concurrent applications in Go.

A TV channel in real life is something that connects an emission (from a studio) to millions of TVs (the receivers). Channels in Go work in a similar fashion. One or more Goroutines can work as emitters, and one or more Goroutine can act as receivers...