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Kafka Delivery Semantics – Explain | Nexonoma

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Nexonoma Explain · Visual system model

Kafka Delivery Semantics

Kafka delivery guarantees emerge end to end: producer, broker, consumer, and business idempotence must carry the same semantics.

6Scenes

5Graph nodes

7Minutes

4Audiences

Scenes

System map

Define expected effectAlign processing

Current scene · 01

The desired guarantee is defined end to end

At-most-once, at-least-once, and exactly-once describe observable effects. The choice depends on acceptable loss and duplicate risk.

Broker configuration alone does not define a business guarantee.

Result of this step

Producer and consumer share the intended delivery semantic.

Connections in this scene

Producer → Delivery pathDefine expected effect
Delivery path → ConsumerAlign processing

Foundations and sources

ByteByteGo: Delivery Semantics Apache Software Foundation: Apache Kafka Producer Configuration: enable.idempotence

Last editorial review: 2026-08-26