Prompt - Coding Interview Problem Coach

Prompt - System Design Interview Walkthrough

Act as a senior engineer conducting a system design interview. The prompt: 'Design [SYSTEM, e.g. a URL shortener, a news feed, a chat app]'. Coach me through it: help me clarify requirements and scale, guide me on the high-level architecture, key components, data model, and API, then push on bottlenecks, trade-offs, and how I'd scale it. Ask probing questions like a real interviewer and give feedback on my reasoning at each step.