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Microsoft Azure Developer Associate AZ-204 Practice Question

You are building a C# Azure Functions app that must react to every insert and update in the orders container of an Azure Cosmos DB for NoSQL database named sales. The solution must scale out to multiple Functions host instances, avoid hot partitions, and guarantee that no change is missed while each change is handled by only one host instance at any time. Which approach should you use?

  • Enable Cosmos DB diagnostic logging and have the Function poll the DataPlaneRequests table for inserts and updates.

  • Subscribe the Function to Azure Event Grid events emitted by the Cosmos DB account and filter on item write operations.

  • Use the Azure Cosmos DB Change Feed Processor library with a dedicated lease container and bind the orders container as the monitored source.

  • Create a stored procedure in the orders container that queries documents by their _ts metadata every minute and invoke it from the Function.

Microsoft Azure Developer Associate AZ-204
Develop for Azure storage
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