Azure Cosmos DB - Partitioning

In Azure Cosmos DB, you can store and query schema-less data with order-of-millisecond response times at any scale. Azure Cosmos DB provides containers for storing data called collections (for documents), graphs, or tables.

Containers are logical resources and can span one or more physical partitions or servers. The number of partitions is determined by Azure Cosmos DB based on the storage size and the provisioned throughput of the container.

A physical partition is a fixed amount of reserved SSD-backed storage. Each physical partition is replicated for high availability. One or more physical partitions make up a container. Physical partition management is fully managed by Azure Cosmos DB, and you don't have to write complex code or manage your partitions. Azure Cosmos DB containers are unlimited in terms of storage and throughput.

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