Saga pattern in production — choreography vs orchestration, compensating actions, idempotency, saga log durability, and how Temporal and Camunda reshape sagas in 2026.
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.
Idempotency keys, conditional requests, dedup stores, and natural idempotent operations — the production blueprint for safely retryable APIs in 2026 at scale.
AWS IoT Device Management vs Azure IoT Hub Device Update vs Google Cloud IoT vs HiveMQ Cloud — architecture, telemetry pipelines, and cost comparison for 2026.