How would you answer an interview scenario involving caching architecture in Cloud Architecture?

For an interview scenario involving caching architecture, I would first clarify the business goal, scale, constraints, and the failure or quality attribute the interviewer wants to explore. Caching stores frequently reused data closer to consumers to reduce latency and load on slower dependencies. In this scenario, a product catalog is read millions of times but updated several times per hour. Design an appropriate cache strategy. For production, choose cache-aside or another deliberate pattern, define TTLs, keys, invalidation, stampede protection, and fallback behavior. I would then explain the main alternatives and tradeoffs, identify likely failure modes, and describe how I would validate the solution through testing, observability, security controls, and recovery or rollback planning.