Hello
RSS FeedI'm Son Tran, a software engineer. Welcome to my personal site — notes, projects, and the occasional write-up.
Recent Posts
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The Four Types of Use Cases
Before you pick a coordination mechanism, ask who owns the coordination. That single question splits every multi-step use case into four types — each with its own correctness contract, failure surface, and ERD signature.
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A small ERD notation choice that costs you real time
How a single visual cue — color-coded constraint membership — turns a five-second scan into a five-minute dialog hunt across legacy schemas.