Which key choice helps preserve order for all events of one order_id?

Question

Which key choice helps preserve order for all events of one order_id?

Option A — Correct answer

Use order_id as the partition key

Option B

Use a random key every time

Option C

Use no key and rely on global ordering

Option D

Use timestamp only

Explanation

Same key routes related events to the same partition.

Quiz: Kafka Consumer Design and Reliability