Purpose of a Partition Key for a Cosmos DB Fixed (10GB) Collection

Question

In the Cosmos DB docs, I see that allocating a Fixed (10GB) Collection means that there will only ever be a single partition allocated to hold documents within the Collectio

Answer 1

When we create partitioned collection we are dealing with "logical partitions" not physical ones, the physical partitions is managed by the Cosmos service.

For "Should I partition my collection?" question, in this blog, you can find:

• Single-partition collections: have lower price options and the ability to execute queries and perform transactions across all collection data. They have the scalability and storage limits of a single partition (10GB and 10,000 RU/s). You do not have to specify a partition key for these collections. For scenarios that do not need large volumes of storage or throughput, single partition collections are a good fit.
• Partitioned collections: can span multiple partitions and support very large amounts of storage and throughput. You must specify a partition key for these collection.