# Event and Messaging Consistency

> For asynchronous systems, validate event contracts, message schemas, idempotent consumers, outbox publication, correlation metadata, ordering guarantees, retry behavior, and dead-letter handling.

Record: `algo:event-and-messaging-consistency`
Kind: arch-relationships
Canonical: https://banes-lab.com/ontology/algorithms#algo-event-and-messaging-consistency
Closure: https://banes-lab.com/json/records/algo/event-and-messaging-consistency/closure

## composes

- [Observability Trace](https://banes-lab.com/records/algo/observability-trace.md)