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


We have taken our first steps in the Behavioral patterns. The objective of this chapter was to introduce the reader to the concept of algorithm and execution encapsulation using proper interfaces and structures. With the strategy, we have encapsulated algorithms, with the chain of responsibility handlers and with the Command design pattern executions.

Now, with the knowledge we have acquired about the strategy pattern, we can uncouple heavily our applications from their algorithms, just for testing, this is a very useful feature to inject mocks in different types that would be almost impossible to test. But also for anything that could need different approaches based on some context (such as shorting a list; some algorithms perform better depending on the distribution of the list).

The Chain of Responsibility pattern opens the door of middleware of any type and plugin-like libraries to improve the functionality of some part. Many open source projects uses a Chain of Responsibility...