Architecture Patterns
Exactly-Once Semantics in Distributed Systems
Exactly-once delivery is often called impossible, but you can achieve it in practice by combining at-least-once delivery with idempotent operations.
IdempotencyTwo-Phase Commit (2PC)Transactional ProducersTransactional ConsumersDeduplicationMessage IDKafka StreamsApache FlinkExactly-Once SemanticsAt-Least-Once SemanticsAt-Most-Once Semantics
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Exactly-Once Semantics in Distributed Systems - System Design Diagram
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