0cd03d3581
Security caches the result of role lookups and negative lookups are cached indefinitely. In the case of transient failures this leads to a bad experience as the roles could truly exist. The CompositeRolesStore needs to know if a failure occurred in one of the roles stores in order to make the appropriate decision as it relates to caching. In order to provide this information to the CompositeRolesStore, the return type of methods to retrieve roles has changed to a new class, RoleRetrievalResult. This class provides the ability to pass back an exception to the roles store. This exception does not mean that a request should be failed but instead serves as a signal to the roles store that missing roles should not be cached and neither should the combined role if there are missing roles. As part of this, the negative lookup cache was also changed from an unbounded cache to a cache with a configurable limit. Relates #33205 |
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