codebase-design

To design deeper module interfaces, you apply consistent vocabulary to create small interfaces with powerful implementations. This approach hides complexity, establishes clear abstraction boundaries, and makes your codebase significantly easier to maintain and test.

You need adapters and seams during software architecture refactoring when you want to isolate dependencies for better testability. Identifying clean seams helps you determine exactly where adapter strategies are justified to structure dependencies properly.

The best way to improve testability through interface design is by applying interface-focused testing principles alongside seam analysis. Restructuring your abstraction boundaries allows you to hide implementation details and isolate modules for more effective testing.

Yes, you can use this approach to analyze existing modules and suggest better abstraction boundaries. It applies deepening strategies and alternative interface exploration to identify opportunities for hiding complexity and improving your overall codebase architecture.

Shallow module design makes dependency management harder because it exposes unnecessary complexity and lacks clear abstraction boundaries. By failing to hide implementation details, shallow modules prevent clean seams and complicate interface-focused testing.