Kafka - Event-Driven Architecture
A developer implemented a Saga using Kafka but notices that compensating events are not triggered on failure. What is the most likely cause?
A developer implemented a Saga using Kafka but notices that compensating events are not triggered on failure. What is the most likely cause?
medium📝 Debug Q14 of 15
Step-by-Step Solution
Solution:
Step 1: Identify compensation trigger mechanism
Compensation happens when a service listens for failure events and reacts by sending rollback events.Step 2: Analyze the problem
If compensations are missing, likely the service is not listening or handling failure events properly.Final Answer:
The service does not listen to failure events to trigger compensation -> Option AQuick Check:
Missing compensation = no failure event listener [OK]
Quick Trick: Compensation needs failure event listeners active [OK]
Common Mistakes:
- Blaming Kafka partitions for compensation logic
- Confusing consumer group ID with compensation triggers
- Assuming broker overload causes missing compensations
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