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Service Design · interview question

Which option is the safer default when shipping code around dependency injection?

Multiple choiceHardchapter-13-curatedpremiumservice-designdependency-injection
python
from fastapi import Depends

def get_repo() -> OrderRepository:
    return OrderRepository()

@app.get("/orders")
def list_orders(repo: OrderRepository = Depends(get_repo)) -> list[dict]:
    return repo.list_recent()
Choose one answer
Answer and explanation

Correct answer

C. 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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