[Solved] Which of the following is the correct Kafka message key usage in a Saga pattern? — Ans: Use a unique transaction ID as the message key to ensure ordering. | Kafka

Kafka - Event-Driven Architecture

Which of the following is the correct Kafka message key usage in a Saga pattern?

AUse a unique transaction ID as the message key to ensure ordering.

BUse a random UUID for each message key to maximize parallelism.

CUse the service name as the message key to group messages.

DDo not use any key to allow Kafka to distribute messages randomly.

Step-by-Step Solution

Solution:

Step 1: Importance of message key in Kafka
Message keys determine partitioning and ordering within partitions.
Step 2: Using transaction ID as key
Using a unique transaction ID as key ensures all messages for that transaction go to the same partition and maintain order.
Final Answer:
Use a unique transaction ID as the message key to ensure ordering. -> Option A
Quick Check:
Kafka message key = transaction ID for ordering [OK]

Quick Trick: Use transaction ID as key to keep messages ordered [OK]

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Which of the following is the correct Kafka message key usage in a Saga pattern?