Školenie
Certifikácia
Microsoft Certified: Azure Cosmos DB Developer Specialty - Certifications
Write efficient queries, create indexing policies, manage, and provision resources in the SQL API and SDK with Microsoft Azure Cosmos DB.
Tento prehliadač už nie je podporovaný.
Inovujte na Microsoft Edge a využívajte najnovšie funkcie, aktualizácie zabezpečenia a technickú podporu.
IoT Hub enables bi-directional communication with your devices. Use IoT Hub messaging to communicate with your devices by sending messages from your devices to your IoT solution back end, and by sending messages from your IoT solution back end to your devices.
IoT Hub has a built-in service endpoint that can be used by back-end services to read telemetry messages from your devices. This endpoint is compatible with Azure Event Hubs and you can use standard IoT Hub SDKs to read from this built-in endpoint.
IoT Hub also supports custom endpoints that can be defined by users to send device telemetry data and events to Azure services using message routing.
Learn more about these topics:
You can send cloud-to-device messages from the IoT solution back end to your devices.
Poznámka
Some of the features mentioned in this article, like cloud-to-device messaging, device twins, and device management, are only available in the standard tier of IoT Hub. For more information about the basic and standard/free IoT Hub tiers, see Choose the right IoT Hub tier for your solution.
Core properties of IoT Hub messaging functionality are the reliability and durability of messages. These properties enable resilience to intermittent connectivity on the device side, and to load spikes in event processing on the cloud side. IoT Hub implements at least once delivery guarantees for both device-to-cloud and cloud-to-device messaging.
Learn more about these topics:
Use device-to-cloud messages for sending time series telemetry and alerts from your device app, and cloud-to-device messages for one-way notifications to your device app.
Learn more about these topics:
Understand the use cases for device-to-cloud messages, reported properties, and file upload: Device-to-cloud communications guidance.
Understand the use cases for cloud-to-device messages, desired properties, and direct methods: Cloud-to-device communications guidance.
Školenie
Certifikácia
Microsoft Certified: Azure Cosmos DB Developer Specialty - Certifications
Write efficient queries, create indexing policies, manage, and provision resources in the SQL API and SDK with Microsoft Azure Cosmos DB.