IT Services Circle
Aug 5, 2026 · Backend Development
Why Kafka Offsets That Appear Committed Still Cause Duplicate Consumption After Restart
The article explains why a Kafka consumer can re‑process tens of thousands of messages after a restart even though the offset was reported as successfully committed, covering auto‑commit timing, rebalance triggers, GC pauses, manual‑commit pitfalls, and practical mitigation strategies.
auto-commitduplicate-consumptionidempotent
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