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Compare NATS - NATS Docs

 

 

Compare NATS - NATS Docs

 

Quality of Service / Guarantees

 

NATS

At most once, at least once, and exactly once is available in JetStream.
(JetStream - NATS Docs)

gRPC

At most once.

Kafka

At least once, exactly once.

Pulsar

At most once, at least once, and exactly once.

Rabbit

At most once, at least once.