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在系统设计面试中你该期待什么
学习使用一种结构化且可重复的框架，理解并自信地应对系统设计面试。
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The main stages of a System Design interview
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Venn diagram of architecture, reasoning, and communication forming effective System Design
Table
| Question Type | Example Prompt | Primary Skill Focus | Key Considerations |
|---|---|---|---|
| Open-ended | Design Instagram | Breadth of knowledge, requirements scoping, and high-level architecture | Understanding user requirements, defining system components, ensuring scalability, and addressing bottlenecks |
| Component-level | Design a caching system | In-depth knowledge of specific system components | Choosing appropriate technologies, trade-offs, and integration with other system parts |
| Scaling/performance | Design a system to handle 1 million concurrent users | Scalability, performance optimization, and load balancing | Identifying bottlenecks, efficient algorithms, and system reliability under high load |
| Trade-off discussion | Compare relational and NoSQL databases for a social media platform | Analytical thinking, understanding of different technologies, and decision-making | Evaluating pros/cons, use case requirements, and justifying choices on consistency, scalability, performance |
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A scalable web application architecture with load balancing, caching, and database replication
Table
| Category | Coding Interview | Behavioral Interview | System Design Interview |
|---|---|---|---|
| Primary focus | Algorithms and data structures | Soft skills and past experiences | System architecture, reliability, and scalability |
| Evaluation criteria | Code correctness, efficiency, and clarity | Relevant examples demonstrating key competencies | Technical reasoning, trade-offs, and design communication |
| Common format | Real-time coding in an IDE or platforms like CoderPad | Structured conversation, often using STAR responses | Whiteboarding or diagramming interactive system architectures |