dynamodb ttl 属性和 RCU

Question

Does configuring TTL attribute in dynamo DB impact RCU. If dynamo DB has to expire any item based on TTL value, does it consume allocated RCU.

I did not find specific documentation on creating TTL in dynamo and impact on RCU configuration.

Answer 1

Taken from the docs

Deletes performed via TTL are not counted towards capacity units or request units. TTL deletes are available at no additional cost.

This process is actually taken care of in the background, so you might actually notice for a brief time after the TTL the item is still here as the delete has been queued to be processed.