The period of time in seconds for which a queue can reuse a data key to encrypt or decrypt messages before calling AWS KMS again.

File: AWS.SQS.pas 

Namespace: AWS.SQS 

Module: Appercept AWS SDK for Delphi 

When left unset defaults to 300 seconds (5 minutes). Valid values are between 60 seconds (1 minute) and 86400 (24 hours). A shorter period offers better security but results in more calls to AWS KMS which may incur higher charges.