Go Data Storage: Designing the Repository Pattern for CLI Tools

When building command-line utilities in Go, hardcoding database queries directly into your application logic leads to rigid, untestable code. Decoupling your data storage layer is the key to creating maintainable and scalable CLI applications. This text-based course guides you through implementing the Repository design pattern in Go, allowing you to easily swap storage backends without rewriting core application logic. Through written explanations and code snippets, you will learn to: Understand the fundamental concepts of the repository pattern and clean architecture; Define clean Go interfaces to decouple business logic from specific databases; Implement an in-memory repository for fast development and testing; Build a persistent SQLite repository using modern Go database practices; Apply context propagation to handle timeouts gracefully; Write unit tests using mock repositories. The course begins with foundational architectural definitions before guiding you through writing interfaces and implementing concrete storage backends. This course is designed for beginner to intermediate Go developers looking to improve their software architecture skills, with no advanced database prerequisites required. Start reading today to design cleaner, highly testable Go applications.