Concept

Atomic broadcast

Résumé
In fault-tolerant distributed computing, an atomic broadcast or total order broadcast is a broadcast where all correct processes in a system of multiple processes receive the same set of messages in the same order; that is, the same sequence of messages. The broadcast is termed "atomic" because it either eventually completes correctly at all participants, or all participants abort without side effects. Atomic broadcasts are an important distributed computing primitive. Properties The following properties are usually required from an atomic broadcast protocol:

Validity: if a correct participant broadcasts a message, then all correct participants will eventually receive it.

Uniform Agreement: if one correct participant receives a message, then all correct participants will eventually receive that message.

Uniform Integrity: a message is received by each participant at most once, and only if it was previously broadcas

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