Design Patterns in Go (Golang)

The book "Design Patterns in Go" is a practical guide to applying classic and modern patterns in Go (Golang) development. Unlike traditional publications focused on Java or C++, this book takes into account the specifics of Go: the absence of inheritance, built-in goroutines and channels, and interfaces as the primary abstraction mechanism.

The book is divided into three parts:

• Creational Patterns — singleton, builder, factory method, abstract factory, prototype. The specifics of implementation in Go are considered, taking into account language idioms.
• Structural Patterns — adapter, bridge, composite, decorator, facade, proxy. Examples of application for organizing code and separating responsibilities.
• Behavioral Patterns — chain of responsibility, command, iterator, mediator, memento, observer, state, strategy, template method, visitor. Special attention is paid to integration with goroutines and channels.

Each pattern is accompanied by:

• a detailed description of the problem and context of application;
• a class and interaction diagram;
• a complete code example in Go with explanations;
• an analysis of advantages and disadvantages;
• recommendations for alternative solutions in the Go ecosystem.

Who this book is for:

• Go developers looking to improve the architecture of their projects;
• programmers transitioning from other languages to Go and seeking analogs of familiar patterns;
• team leads and architects designing scalable and maintainable systems;
• students and those learning Go who want to master professional development practices.

The reader will learn:

• how to adapt classic patterns to idiomatic Go;
• which patterns are effective in a concurrent environment with goroutines;
• how to avoid anti-patterns and unnecessary complexity;
• how to build flexible architecture that is resilient to changing requirements.

The book contains over 20 patterns, each with working code that can be immediately used in real projects. All examples are tested on the latest version of Go and comply with modern coding standards.

This book will become a desktop reference for any Go developer striving to write clean, modular, and easily maintainable code.