AsyncAPI 3.0 architecture — channels, operations, and messages for MQTT, Kafka, AMQP, and WebSocket APIs. Full example spec, code-gen, and governance pattern for 2026.
Saga pattern in production — choreography vs orchestration, compensating actions, idempotency, saga log durability, and how Temporal and Camunda reshape sagas in 2026.
Deep dive into async processing — message queues vs event streams, at-least-once vs exactly-once, dead letter queues, back-pressure, and choosing between Kafka, RabbitMQ, and SQS.