Distributed Systems for Practitioners/

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The Tale of Exactly-Once Semantics

The Tale of Exactly-Once Semantics

Know the story behind the exactly-once semantics.

We'll cover the following...

Multiple deliveries of a message

Example consequence

Avoiding multiple deliveries of a message

Idempotent operations approach

Example of idempotent operation
Example of non-idempotent operation

De-duplication approach

Example

Difference between delivery and processing
Other delivery semantics

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