Kafka Message Loss and Duplication: A Complete Guide
Core Principles
Kafka provides At-Least-Once delivery semantics by default, not exactly-once. This means:
Messages may be duplicated but will never be lost
Achieving no-duplication requires business-level idempotency
Achieving no-loss requires proper configuration and mechanisms
Part One: Message Loss Scenarios and Solutions
Message loss occu ...
Posted on Wed, 19 Aug 2026 16:55:19 +0000 by figo2476