DynamoDB Time To Live (Ttl)

• Automatically delete items after an expiry timestamp
  • Expired items deleted within 48 hours of expiration
    • Will be deleted from both LSI anbd GSI
  • Expired items that haven't been deleted will appears in reads queries or scan.
    • We need to filter them if you don't want them
• Doesn't consume any WCUs (no extra cost)
• TTL attribute must be Number data type with Unix Epoch timestamp value
• Delete operation for each expired item will go to DynamoDB Streams