Your question is Data Storage for High Traffic. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
How would you structure a data storage solution for a high-traffic web application? Explain how you would clarify requirements, select storage technologies, plan scaling and partitioning, protect data, manage operational risks, and deliver the solution incrementally. Address trade-offs among consistency, availability, latency, durability, complexity, and cost.