System Design Basics
For 3+ years of experience. Scaling, caching, databases and queues — the vocabulary and the structure to walk through an open-ended design.
5 questions 20 min read 25.4K candidates preparing
Before you sit for this round
- Always start by clarifying requirements and scale numbers
- Draw the boxes before discussing any single component in depth
- State trade-offs explicitly — there is no correct answer, only defended ones
- Leave time to discuss bottlenecks and failure modes
Questions & model answers
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