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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Singleton design pattern - having a unique instance of a type in the entire program

Have you ever done interviews for software engineers? It's interesting that when you ask them about design patterns, more than 80% will mention Singleton design pattern. Why is that? Maybe it's because it is one of the most used design patterns out there or one of the easiest to grasp. We will start our journey on creational design patterns because of the latter reason.


The Singleton pattern is easy to remember. As the name implies, it will provide you with a single instance of an object, and guarantee that there are no duplicates.

At the first call to use the instance, it is created and then reused between all the parts in the application that need to use that particular behavior.

You'll use the Singleton pattern in many different situations. For example:

  • When you want to use the same connection to a database to make every query

  • When you open a Secure Shell (SSH) connection to a server to do a few...