How We Solved a Kafka Freeze, 5x-ed Throughput, and Right-Sized Our Partitions — Lessons from…

How We Solved a Kafka Freeze, 5x-ed Throughput, and Right-Sized Our Partitions — Lessons from Production at Scale At Slice, we run a high-throughput event-driven backend. Kafka is at the center of it, processing payments, order lifecycle events, and downstream integrations across 50+ topics. Over the few months, we tackled three distinct problems in our Kafka consumer layer, each of which taught…

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