Service Design · interview question
A bug appears around service layer. What is the strongest first debugging move?
Multiple choiceMediumchapter-13-curatedpremiumservice-designservice-layer
class OrderService:
def __init__(self, repo: OrderRepository) -> None:
self._repo = repoAnswer and explanation
Correct answer
A. Trace one concrete example, inspect the state transitions, and compare them to the intended rule before rewriting anything.
Why
That approach is reliable because it creates evidence. If workflow decisions live in the route handler, the boundary and policy concerns collapse together.
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