As an admin I would like to be able to specify a time during which a user authentication result (i.e. Is user authorised, yes or no?) is cached. The purpose of this is to reduce the amount of authentication requests to Active Directory.

For example, Bitbucket has a property for this: auth.cache.ttl
https://confluence.atlassian.com/bitbucketserver0717/configuration-properties-1087536341.html