Industrial Internet Application Development

Event/Message hub-based connectivity

The Event/Message hub Publish-Subscribe connectivity is another option for IoT application, specifically if the volume of data ingestion is huge and the number of clients is also large. Event Hub uses Kafka messaging infrastructure and can operate on top of many different connectors, such as WebSocket, HTTP, gRPC, MQTT, and so on. The best case architecture is to use WebSocket with message format in JSON to connect to the Kafka service, or you can use gRPC (HTTP/2 Streaming protocol) with protobuf messaging protocol. Event hub is built to be secure, massively scalable, fault tolerant, and language-agnostic. As can be seen in the following example, the Event Hub acts as a cloud connector and queuing system, ...