“A C4 code-level diagram for invoice generation. An invoice request reaches an invoice handler, which uses a tax calculator, PDF renderer, invoice repository, email sender and ledger client. The invoice repository stores documents in document storage.”
図の背後にある意思決定を読み解く。
Keeps invoice workflow in a single handler.
Separates tax calculation and PDF rendering.
Shows persistence, delivery and ledger collaborators.
Use this close-up C4 view to discuss the code-level responsibilities behind invoice generation.
よくある質問
Is a C4 code view a class diagram?
It can use code-level elements, but it should emphasize important responsibilities and relationships rather than every class.
Why use an invoice handler?
It provides one place to coordinate the workflow across calculation, rendering, storage and delivery.
What should be omitted?
Framework internals and minor helper functions that do not help readers understand the design.