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

Mediator design pattern

Let's continue with the Mediator pattern. As its name implies, it's a pattern that will be in between two types to exchange information. But, why will we want this behavior at all? Let's look at this in detail.


One of the key objectives of any design pattern is to avoid tight coupling between objects. This can be done in many ways, as we have seen already.

But one particularly effective method when the application grows a lot is the Mediator pattern. The Mediator pattern is the perfect example of a pattern that is commonly used by every programmer without thinking very much about it.

Mediator pattern will act as the type in charge of exchanging communication between two objects. This way, the communicating objects don't need to know each other and can change more freely. The pattern that maintains which objects give what information is the Mediator.


As previously described, the main objectives of the Mediator pattern are about loose coupling and encapsulation...