0-5 min Clarify functional requirements, constraints, and scope. 5-10 min Estimate scale, define APIs and core data models. 10-20 min Build the simplest correct high-level architecture and explain the main data flow. 20-30 min Deep-dive into the hardest concerns: consistency, transactions, reliability, or scale. 35-45 min Examine failures, trade-offs, observability, and potential improvements. 5m 5m… Continue reading Time Allocation for System Design Interviews