The option determines cache expiry time on the CDN servers
If this option is checked, the Cache-Control header responsible for caching will be inherited from your origin and respected by CDN servers.
If you disable this option, the Cache-Control header from your origin will be ignored by CDN servers. The content will be cached for the time specified in Cache Expiry.
When disabled, please specify the Expires Header that defines end user browser TTL.
Note! If a file is not requested for more than 8 hours, it can be removed from CDN server cache.