# Event Messaging

> Convert state changes into events, classify domain versus integration events, publish through durable channels, consume idempotently, and preserve ordering where required.

Record: `algorithms:event-messaging`
Kind: algorithm
Canonical: https://banes-lab.com/ontology/algorithms#algorithms-event-messaging
Closure: https://banes-lab.com/json/records/algorithms/event-messaging/closure

Listed in [Algorithm contracts](https://banes-lab.com/api/records/algorithms.md), after [Port Adapter](https://banes-lab.com/records/algorithms/port-adapter.md) and before [Saga Compensation](https://banes-lab.com/records/algorithms/saga-compensation.md).

## Domain

- [Architecture](https://banes-lab.com/records/algorithms-domain/architecture.md)

## Tier

- [leaf](https://banes-lab.com/records/vocabulary/domain-tier-leaf.md)

## Math type

- [Analysis](https://banes-lab.com/records/reasoning/math-type-analysis.md)

## Force

- [Causality ordering](https://banes-lab.com/records/force/causality-ordering.md)
- [Domain boundary](https://banes-lab.com/records/force/domain-boundary.md)
- [Event messaging](https://banes-lab.com/records/force/event-messaging.md)

## Linked from

- [Architecture relationships](https://banes-lab.com/ontology/algorithms/algorithms-domain-arch-relationships.md)
- [The mathematics](https://banes-lab.com/ontology/reasoning/the-mathematics.md)
- [Domain tiers](https://banes-lab.com/ontology/schema/the-vocabulary-domain-tier.md)
- [The forces](https://banes-lab.com/ontology/schema/the-forces.md)