Golang: Syllabus

Forget everything you know about traditional OOP—Go looked at classical inheritance and said, “Nah, we’re good.” Instead, it gives you composition, interfaces, and a whole new way to question your life choices.

This book cuts through the noise and teaches you how to embrace Go’s quirky but effective approach to software design. We’ll focus on best practices, practical implementation, and avoiding the classic mistakes that make Go veterans shake their heads in disappointment.

By the end, you’ll be able to build robust, maintainable Go applications that don’t rely on inheritance-based spaghetti. You’ll write cleaner code, sleep better at night, and maybe—just maybe—learn to love Go’s “my way or the highway” attitude.

Module 1: Introduction to Object-Oriented Design in Go#

• Why Go takes a different approach to OOP
• Understanding composition vs. inheritance
• The role of interfaces and struct embedding
• Setting up a Go development environment

Module 2: Structs and Methods in Go#

• Defining structs and creating methods
• Pointer vs. value receivers
• Method chaining and fluent APIs
• Comparing structs vs. classes in OOP languages

Module 3: Encapsulation and Data Hiding#

• Exported vs. unexported identifiers in Go
• Managing access with struct methods
• Designing maintainable APIs with encapsulation

Module 4: Interfaces and Polymorphism in Go#

• Defining interfaces in Go
• Implementing polymorphism using interfaces
• Empty interfaces and type assertions
• Best practices for designing flexible interfaces

Module 5: Composition Over Inheritance#

• Why Go avoids classical inheritance
• Struct embedding and promoting methods
• Implementing behavioral extensions with composition

Module 6: Dependency Injection and Decoupling#

• Understanding dependency injection in Go
• Passing dependencies through constructors
• Using interfaces for better testability and modularity

Module 7: Error Handling and Defensive Programming#

• Idiomatic Go error handling using error type
• Creating custom error types
• Handling panics and recovering gracefully

Module 8: Concurrency and OOP in Go#

• Goroutines and channels for scalable software design
• Synchronizing state with mutexes and atomic variables
• Implementing worker pools and producer-consumer patterns

Module 9: SOLID Principles and Go Best Practices#

• Single Responsibility Principle in Go
• Open/Closed Principle with interfaces
• Liskov Substitution Principle with type composition
• Interface Segregation and Dependency Inversion in Go

Module 10: Design Patterns in Go#

• Creational patterns: Factory, Builder, Singleton
• Structural patterns: Adapter, Decorator, Proxy
• Behavioral patterns: Strategy, Command, Observer

Module 11: Testing and Test-Driven Development (TDD)#

• Writing unit tests for Go structs and methods
• Table-driven tests for scalable test cases
• Using mock and interfaces for dependency injection
• Benchmarking and profiling performance in Go

Module 12: File Handling and Persistence#

• Reading and writing files in Go
• Working with JSON, CSV, and XML formats
• Implementing database connectivity with GORM

Module 13: Building Scalable Go Applications#

• Structuring Go projects for maintainability
• Managing dependencies with Go Modules
• Logging, monitoring, and debugging Go applications

Module 14: Web Development and APIs with Go#

• Creating RESTful APIs with net/http
• Using gorilla/mux and gin frameworks
• Implementing middleware for authentication and logging

Module 15: Capstone Project and Real-World Applications#

• Applying OOP and design principles in a real Go application
• Code review and best practices
• Deploying Go applications using Docker and Kubernetes

Hands-On Projects

Project 1: User Management System#

• Implement authentication and role-based access control
• Use interfaces for extensible user storage backends
• Secure password management with hashing

Project 2: E-Commerce API#

• Implement a product catalog with Go structs
• Develop RESTful APIs with authentication and JWT
• Integrate payment gateways using external APIs

Project 3: Concurrency-Based Task Scheduler#

• Implement a worker pool using goroutines
• Use channels for scheduling and managing tasks
• Optimize performance with proper synchronization

Project 4: Real-Time Chat Application#

• Implement WebSockets for real-time messaging
• Use goroutines for handling multiple connections
• Store and retrieve messages with a database

Project 5: Logging and Monitoring System#

• Implement structured logging in a Go application
• Use middleware for logging requests and errors
• Integrate application monitoring with Prometheus and Grafana

References#

• Go Official Documentation
• Go Best Practices
• Design Patterns in Go
• SOLID Principles in Go