Step-by-step OPC UA PubSub over MQTT 5 implementation — DataSetMessage mapping, JSON vs UADP, security profiles, and a working aiomqtt + asyncua tutorial for 2026.
Production Backstage 1.30 IDP setup — software catalog, scaffolder templates, TechDocs, auth plugins, and a working docker-compose stack with PostgreSQL and Kubernetes ingestion.
Step-by-step production tutorial for bridging MQTT to Kafka with the Lenses MQTT Source connector — schema mapping, QoS handling, Sparkplug B decoding, and HA topology.