Kafka Stream Processing Cheat Sheet

Topics, partitions, and connectors

Last Updated: November 21, 2025

Focus Areas

Focus
Choose partition keys that suit your stateful operations
Use idempotent producers and changelog topics for state stores

Commands & Queries

kafka-topics --create --topic orders --partitions 12
Create topic
kafka-console-consumer --topic orders --from-beginning
Inspect events
kafka-streams-application-reset --application-id my-app --input-topics orders
Reset offsets

Summary

Tune partitions, monitor lag, and guard processors with changelog state.

💡 Pro Tip: Align partition keys with workload needs and monitor consumer lag.
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