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DDD、SDD、TDD:三個維度的邊際效益矩陣

June 18, 2026 by Tim

軟體團隊常把 DDD、SDD 與 TDD 當成三選一的方法論,但它們其實分別處理領域語言、介面契約與重構風險。本文用三軸矩陣拆解三者在不同複雜度、協作邊界與變更成本下的邊際效益,提供判斷何時投資建模、規格或測試的實用框架,避免把方法論討論變成宗教戰爭。

Categories Technical Tags DDD, SDD, Software Architecture, TDD, Testing

DDD, SDD, TDD: A Three-Axis Marginal Return Matrix

June 18, 2026 by Tim

DDD, SDD, and TDD address different risks: domain language, interface contracts, and change safety. This matrix shows where each method pays off.

Categories Technical Tags DDD, SDD, Software Architecture, TDD, Testing

關於作者

Tim

Technology consultant, writing while doing | AI, Claude Code, Cloud

跟工程師、Tech Lead 一起在實戰現場踩坑。把學到的判斷框架、改回來的決定寫下來——失敗率、紅旗、不適合的場景一起談。也寫單車。

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