At 09:14 UTC on March 12, 2026, our Kafka 4.0 consumer lag for the payments topic hit 1.2 million messages, 14x our SLA threshold, 12 minutes before a $40M product launch. We fixed it in 47 minutes using Cilium 1.17 eBPF metrics and Datadog 2026's new Kafka integration. Here's how.




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