Partition Key
A key attribute in a DynamoDB table used to uniquely identify items. Its value is passed through a hash function to determine where the item is stored, and it also affects the efficiency of read and write operations.
Timeline (last 90 days)
In Cosmos DB, the partition key is the core concept that determines data distribution and horizontal scaling; each container must specify a partition key property, and Cosmos DB distributes data across different physical partitions based on the hash value of that property.
An ideal partition key should have three characteristics: high cardinality, even distribution, and frequent use as a filter condition in queries; using low-cardinality properties (such as status or type) or frequently updated properties as the partition key is a common mistake.
All Facts (2)
In Cosmos DB, the partition key is the core concept that determines data distribution and horizontal scaling; each container must specify a partition key property, and Cosmos DB distributes data across different physical partitions based on the hash value of that property.
50%UnverifiedAn ideal partition key should have three characteristics: high cardinality, even distribution, and frequent use as a filter condition in queries; using low-cardinality properties (such as status or type) or frequently updated properties as the partition key is a common mistake.
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