Default client cache time to live. Provides a default expiration interval in case a particular catalog record does not contain a valid catalog::Expiration
or vignette::Expiration
value. Or, if a vignette file or material file is accessed directly, rather than by way of a catalog record.
Real number, 0
or greater. Number of hours until expiration since the reply data was generated. Set to 0
to always expire the reply image immediately, which effectively disables client caching. Set to -1
to mark as never expire.
Inherited from default::Expiration
if not defined or if empty.
catalog::Expiration , vignette::Expiration