InterviewSam
Log inStart free
Interview questions
Consistency & distributed transactionsMediumSDE-2

Your Cassandra-style store has replication factor 3. Explain how you would pick read and write quorum sizes, and whether R + W > N gives you strong consistency.

Asked at
AmazonNetflixUber

Think first

Answer out loud as you would in the room — clarify, give numbers, name the trade-off — then compare with the model answer.

Go deeper

Design a distributed key-value store (like DynamoDB) Lesson: Consistency models and quorums

Saved on this device. Create a free account to keep it on every device.

Practise this with Sam

A real mock interview, out loud, with an honest scorecard. Free to start.

Start free