Your question is High-Concurrency LLM Serving. 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).
Design a system for LLM serving that needs to handle high concurrency while maintaining low latency. What caching strategies would you employ?
Discuss the serving architecture, cache layers, cache keys and invalidation, request coalescing, model and prompt versioning, privacy, consistency, capacity management, and fallbacks. Treat latency, cost, cache effectiveness, training-serving skew, and production monitoring as first-class concerns.