All challenges
Code AnalysisIntermediate 45s

Partition key hashing

How does Kafka determine partition?
Starter code
// Default: hash(key) % numPartitions
// Same key → same partition (ordering guaranteed)

Think you can answer under pressure?

Get matched and answer live questions in 3-minute 1v1 battles. Elo ranking, badge tiers and bragging rights on the line.

Play this in a 3-minute battle