@ConditionalOnMissingBean(name = PrincipalAttributesRepositoryCache.DEFAULT_BEAN_NAME)
        @Bean
        @RefreshScope(proxyMode = ScopedProxyMode.DEFAULT)
        public PrincipalAttributesRepositoryCache principalAttributesRepositoryCache() {
            return new DefaultPrincipalAttributesRepositoryCache();
        }
This is {@link CasCoreAuthenticationSupportConfiguration}.

@author Misagh Moayyed
@since 5.1.0
core/cas-server-core-authentication/src/main/java/org/apereo/cas/config/CasCoreAuthenticationSupportConfiguration.java