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Client cache TTL for default image responses. Provides the expiration interval for default image responses (responses which return a default image specified with either defaultImage= or attribute::DefaultImage).
Only applied when the default image is not associated with a catalog record or when the default image catalog record does not provide a specific catalog::Expiration value.


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 for default image responses. Set to -1 to mark as never expire .


Inherited from default::DefaultExpiration if not defined or if empty.
TTL (Time-To-Live) is the duration before the cache expires. The default TTL is 1 hour.