You want to implement a Kafka CQRS system where commands trigger events that update multiple read models asynchronously. Which approach best supports this?

hard📝 Application Q8 of 15

Kafka - Event-Driven Architecture

ASend all events to a single topic and have one query handler update all read models

BUse separate event topics for each read model and have query handlers subscribe accordingly

CCombine commands and events in one topic to simplify processing

DUse only commands topic and update read models directly in command handler

Step-by-Step Solution

Solution:

Step 1: Understand asynchronous updates in CQRS
Events represent state changes and can be consumed by multiple query handlers independently.
Step 2: Design for multiple read models
Using separate event topics per read model allows independent scaling and decoupling.
Final Answer:
Use separate event topics for each read model and have query handlers subscribe accordingly -> Option B
Quick Check:
Separate event topics enable async updates [OK]

Quick Trick: Separate event topics for each read model improve scalability [OK]

Common Mistakes:

Combining commands and events in one topic
Using single query handler for all models
Updating read models in command handler

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More Kafka Quizzes

You want to implement a Kafka CQRS system where commands trigger events that update multiple read models asynchronously. Which approach best supports this?

Step 1: Understand asynchronous updates in CQRS

Step 2: Design for multiple read models

Final Answer:

Quick Check:

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