Service Design · interview question
Which option is the safer default when shipping code around dto mapping?
Multiple choiceHardchapter-12-curatedpremiumservice-designdto-mapping
def to_order_summary(payload: dict[str, object]) -> dict[str, object]:
return {"id": payload["order_id"], "status": payload["state"]}Answer and explanation
Correct answer
B. Choose the simpler shape that keeps the rule obvious, validated, and easy to observe in logs or tests.
Why
The safest default is usually the one that lowers ambiguity and makes errors easier to diagnose.
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