Microservices - Event-Driven Architecture
You need to rebuild a microservice state after a schema change in events. Which approach best supports event replay with schema evolution?
You need to rebuild a microservice state after a schema change in events. Which approach best supports event replay with schema evolution?
hard📝 Trade-off Q8 of 15
Step-by-Step Solution
Solution:
Step 1: Understand schema change impact
Schema changes require handling old event formats during replay.Step 2: Select best approach
Versioning events and transforming old events during replay ensures compatibility. Deleting or ignoring old events loses data. Replaying without transformation causes errors.Final Answer:
Use versioned events and transform old events during replay -> Option CQuick Check:
Versioning enables safe schema evolution [OK]
Quick Trick: Version and transform events to handle schema changes [OK]
Common Mistakes:
MISTAKES- Deleting old events losing history
- Ignoring old events causing errors
- Replaying without adapting schema
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