event-driven-architecture

Guides event-driven systems—pub/sub, point-to-point, event sourcing, CQRS, schema versioning (Avro/JSON Schema), ordering, partitioning, delivery guarantees, idempotency, exactly-once tradeoffs, transactional outbox/inbox, choreography vs orchestration, sagas, dead-letter queues, replay, stream vs discrete events, microservice boundaries. Use when the user asks for event-driven architecture, event sourcing, CQRS, pub/sub, Kafka events, outbox pattern, idempotent consumer, event choreography, saga orchestration, dead letter queue, or event schema versioning—not microservice code only (microservices-developer), enterprise API/iPaaS only (enterprise-integration-api-developer), EDI (edi-engineer), classified promotion (classified-software-devsecops-engineer), solvers (operations-research-algorithm-developer), generic CRUD (senior-software-engineer).