ConceptWrite Capacity Unit
WCU
The write capacity unit under the DynamoDB provisioned capacity mode, representing the amount of data that can be written per second and used to specify a table's write throughput capacity.
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Oct 19
In provisioned mode, 1 RCU represents one strongly consistent read per second of a 4 KB item, or two eventually consistent reads per second; 1 WCU represents 1 KB written per second; when an item exceeds the threshold it rounds up and consumes multiple units.
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