Introduction: More Interview Questions

Knowing a design rule is not the same as being able to use it under a timer.

You may know that collections need pagination, that retried creates need idempotency, and that stale conditional writes return 412. An interview question does not ask you to recite those facts. It gives you a product, leaves several requirements unstated, and asks you to decide which facts matter before the time is over.

That is the purpose of this chapter. It introduces no new technique. Every rule, status code, field convention, and recovery pattern has already appeared in Chapters 1 to 5