designing-software

Planning software architecture involves using discovery questions and C4 modeling to surface edge cases and define system boundaries. This approach evaluates trade-offs and nonfunctional requirements early in feature design to prevent brittle systems.

The C4 model is a scalable diagramming approach for system design that structures discussions across System Context, Containers, and Components. It helps map feature boundaries and visualize architectural decisions clearly for design reviews.

Applying SOLID principles guides software structuring for maintainability, testability, and extensibility. By validating critical trade-offs against these principles during feature planning, you ensure robust API design and architecture.

Documenting API design and architectural decisions is best done by creating a concise design brief mapped to a Level 1 System Context diagram. This method ensures clear decision criteria and interface definitions across systems.

Discovery questions can be used to evaluate trade-offs for feature planning by surfacing nonfunctional requirements early. This technique defines interfaces and validates architectural boundaries before implementation begins.

Detailed software design documentation may be unnecessary when a new feature requires no complex architectural decisions or interface definitions. Without critical trade-offs or nonfunctional requirements to evaluate, lightweight planning suffices.