Deep Dive into Azure Cosmos DB Physical Partitions

Deep Dive into Azure Cosmos DB Physical Partitions When using Azure Cosmos DB effectively, the most important aspect is designing the partition key. However, when we talk about “partitions” in Cosmos DB, there are actually two types: logical partitions and physical partitions . This topic is briefly covered in the official documentation, so it’s a good idea to review it first. In most cases, physical partitions are fully managed by Azure, so you rarely need to think about them. Partitioning and horizontal scaling - Azure Cosmos DB | Microsoft Learn Learn about partitioning, logical, physical partitions in Azure Cosmos DB, best practices when choosing a partition key, and how to manage logical partitions. learn.microsoft.com When designing your data model, the partition key corresponds to logical partitions. Both logical and physical partitions have their own limits, but in most cases, you only need to care about the 20 GB limit of logical partitions . Although you usually don’t need to