【系统设计】系统设计宏观流程以及常见错误

宏观流程
1 Outline use cases: List major and focus on some Show good sense. The questions you asked define your level
2 Estimate scale: Data + Traffic Back-of-the-envelope estimation
3 Defining data model It helps to clarify how data will flow among different components
4 Abstract design Sketch main components, explain workflow, avoid too deep for details
5 Detailed design + discussion with interviewers Explain trade-off of your proposal + on-demand deep dive
6 Identify and resolve Bottlenecks Key challenges + Trade-Offs. Usuaully no optimal solution(s)
7 Scale your design Availability, Resiliency, Scalability, Security, Serviceability, etc
8 Show your relevant experience and learning Industry best practice; You experience of scaling/trade-off/resiliency

系统设计常见错误：
1 Run into an opinioned solutions before clarification Inexperienced; Hard to communicate
2 Not driving the conversation Inexperienced
3 General answers without your personal experience/thinking
4 Makes interviewers feeling you’re stubborn