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Joel Hanson

Kafka Common Problems

Short playbooks for the Kafka failures that keep showing up in support and production: confirm the symptoms, run a tight diagnosis checklist, then apply the smallest fix that sticks.

  1. When One Kafka Partition Takes All the Heat

    Hot partitions show up as lag on one partition, a stressed broker, and consumers that do nothing when you scale out. Confirm the skew, fix the key, and recreate it locally with a Docker Compose demo.