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What is DynamoDB provisioned capacity?
With provisioned capacity mode, you specify the number of data reads and writes per second that you require for your application. You can use auto scaling to automatically adjust your table’s capacity based on the specified utilization rate to ensure application performance while reducing costs.
What is provisioned throughput DynamoDB?
Provisioned throughput is the maximum amount of capacity that an application can consume from a table or index. If your application exceeds your provisioned throughput capacity on a table or index, it is subject to request throttling. Throttling prevents your application from consuming too many capacity units.
What is adaptive capacity in DynamoDB?
Adaptive capacity is a feature that enables DynamoDB to run imbalanced workloads indefinitely. It minimizes throttling due to throughput exceptions. It also helps you reduce costs by enabling you to provision only the throughput capacity that you need.
How is DynamoDB read capacity calculated?
1 read capacity unit (RCU) = 1 strongly consistent read of up to 4 KB/s = 2 eventually consistent reads of up to 4 KB/s per read. 2 RCUs = 1 transactional read request (one read per second) for items up to 4 KB. For reads on items greater than 4 KB, total number of reads required = (total item size / 4 KB) rounded up.
What is provisioned read capacity?
A read capacity unit represents one strongly consistent read per second, or two eventually consistent reads per second, for an item up to 4 KB in size. To learn more about DynamoDB read consistency models, see Read Consistency. For example, suppose that you create a table with 10 provisioned read capacity units.
Is there a limit to how much throughput you can get out of a single table in DynamoDB?
The maximum provisioned throughput you can request is 10,000 write capacity unit and 10,000 read capacity unit for both auto scaling and manual throughput provisioning.
What is the maximum size of an item in DynamoDB?
400 KB
The maximum item size in DynamoDB is 400 KB, which includes both attribute name binary length (UTF-8 length) and attribute value lengths (again binary length). The attribute name counts towards the size limit.