Design a Key-Value Store
Last updated: June 17, 2026
Quick Overview
Design a distributed key-value store like Bigtable or DynamoDB. Cover consistent hashing, replication strategies, read/write quorums, compaction, and tunable consistency levels.
Google
System Design
Software Engineer
Software Engineer
Onsite
System Design
Hard
174
0
301 solved
Design a distributed key-value store like Bigtable or DynamoDB. Cover consistent hashing, replication strategies, read/write quorums, compaction, and tunable consistency levels.
How to Approach This
- Start by clarifying functional and non-functional requirements with the interviewer.
- Estimate the scale: QPS, storage, bandwidth. This drives your design decisions.
- Draw a high-level architecture first, then deep dive into 1-2 critical components.
- Discuss trade-offs explicitly (e.g., consistency vs availability, SQL vs NoSQL).
- Address failure scenarios, monitoring, and how the system handles 10x traffic spikes.
Sharpen Your Skills on Codemia
Practice similar problems with our interactive workspace, get AI feedback, and track your progress.
Practice System Design ProblemsSubmit Your Answer
Markdown supported