Azure Cosmos DB Blog

The latest news, updates and technical insights from the Azure Cosmos DB team

Azure Cosmos DB Conf 2022 – Call for Papers

We are very excited to announce that Azure Cosmos DB Conf is returning, April 19-20, 2022. Azure Cosmos DB Conf is a free, 24-hour virtual developer event co-organized by Microsoft and the Azure Cosmos DB community. This is our second Azure Cosmos DB Conf. Sessions will be a combination of Microsoft and community delivered. The event will ...

Now in preview – Support for custom partitioning in Azure Synapse Link for Azure Cosmos DB

Support for custom partitioning in Azure Synapse Link for Azure Cosmos DB was announced in preview at Microsoft Ignite. This capability improves query performance by enabling you to partition Azure Cosmos DB analytical store data using keys that are frequently used as query filters.

Now Generally Available – Partial Document Update in Azure Cosmos DB

Check out the new partial document update feature for Azure Cosmos DB Core (SQL) API, announced at Microsoft Ignite. This feature makes it possible to use the Java, .NET, and Node.js SDKs to perform path-level updates to specific fields/properties in a single document without needing to perform a full document read-replace operation.

Now in private preview: optimize your data distribution with hierarchical partition keys

Hierarchical partition keys are now available in private preview for the Azure Cosmos DB Core (SQL) API. With hierarchical partition keys, also known as sub-partitioning, you can now natively partition your container with up to three levels of partition keys. This enables more optimal partitioning strategies for multi-tenant scenarios or ...