フリー問題

問題文

A retailer's checkout slows down and starts timing out whenever the external card payment gateway of a provider becomes slow. Monitoring shows that the retailer's own processor and memory stay well below their limits throughout. Which challenge does this describe?

選択肢

1. Data integrity violations, because the heavier concurrent load corrupts the persisted transactions.
2. Technical debt risks, because the ageing hardware component increases the yearly maintenance.
3. Third party dependencies, because the external provider throttles the internal checkout.
4. Local infrastructure limitations, because the outdated hardware restricts the attainable performance.