Interview Arena
The 4-step framework every interview below follows
1. Scope~5 min
Clarify features, users, scale and constraints. Do a quick estimate.
2. High-level design~15 min
Sketch the main components and APIs; get the interviewer's buy-in.
3. Deep dive~15 min
Go deep on the hardest 1–2 components the interviewer cares about.
4. Wrap up~5 min
Bottlenecks, failure modes, monitoring, and what you'd do next.