[Solved] Why does the CQRS pattern in Kafka often use event sourcing alongside commands and queries? — Ans: To store all changes as immutable events for audit and replay | Kafka

Kafka - Event-Driven Architecture

Why does the CQRS pattern in Kafka often use event sourcing alongside commands and queries?

ATo avoid using Kafka producers

BTo store all changes as immutable events for audit and replay

CTo combine commands and queries into one operation

DTo reduce the number of Kafka topics needed

Step-by-Step Solution

Solution:

Step 1: Understand event sourcing concept
Event sourcing stores all state changes as a sequence of immutable events.
Step 2: Relate event sourcing to CQRS in Kafka
This allows audit trails, debugging, and rebuilding read models by replaying events.
Final Answer:
To store all changes as immutable events for audit and replay -> Option B
Quick Check:
Event sourcing = immutable event storage for audit [OK]

Quick Trick: Event sourcing stores all changes as events for replay [OK]

Common Mistakes:

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Why does the CQRS pattern in Kafka often use event sourcing alongside commands and queries?