Lesson 4 of 5

Topic Design Best Practices

Name topics descriptively: {domain}.{entity}.{event-type} e.g. orders.order.created. Avoid broad topics with mixed schema types — one topic per event type is safer for schema evolution. Use Avro + Schema Registry for schema enforcement and backward/forward compatibility. Consider compacted topics for lookup data. Use prefix namespacing for multi-tenant clusters: team.{team}.{domain}.{entity}.

Try it in the simulator

Guided scenarios for this module — the simulator opens with the exercise already running.

Shrink the ISR with follower lagDrag a follower's replication lag past the threshold, watch it ejected from the ISR, then let it recover.Intermediate · ~5 min
Trigger a consumer rebalanceGrow and shrink a consumer group and watch partition assignments redistribute each time.Intermediate · ~5 min