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2026-04-28 11:06
Postmortem: A Kafka 4.0 Broker Failure on Kubernetes 1.34 Caused 1 Hour of Message Lag for 10k Topics
At 14:22 UTC on October 17, 2024, a single Kafka 4.0 broker running on Kubernetes 1.34 suffered a cascading failure that pushed message lag to 14 hours for 10,000 active topics, costing our e-commerce client $240k in SLA penalties before we resolved the root cause 62 minutes later.
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