Tracks / System Design
System Design
Scale, consistency, storage choice, and worked case studies.
senior
Trade-offs and failure modes under follow-up pressure.
- Fundamentals & the interview framework10 questions
A repeatable method for the 45-minute design interview, plus CAP, consistency, sharding and the building blocks.
staff
Judgement, scope and the questions with no clean answer.
- Case studies — URL shortener, feed, chat, rate limiter5 questions
Four designs worked end to end, with the estimates, the schema, the bottleneck and the follow-ups.
- The staff pressure round Signal6 questions
Six decisions with no clean answer. The interviewer will disagree with whatever you pick — the question is whether your reasoning survives it.
- Replication, consensus & the impossibility results Deep8 sections
How Raft actually works, what quorums buy you, why FLP and CAP constrain everything, and how real databases replicate.