https://doc.wikimedia.org/mediawiki-core/master/php/classMediaWiki_1_1Cache_1_1UserCache.html
MediaWiki: MediaWiki\Cache\UserCache Class Reference
mediawikicacheclassreference
https://support.atlassian.com/jira/kb/jira-login-fails-after-usercache-being-flushed/
Jira Login fails after userCache being flushed | Jira and Jira Service Management | Atlassian...
Solve the problem of Jira login failure after UserCache being flushed, relevant for server platforms.
service managementjirafails
https://access.redhat.com/webassets/avalon/d/red_hat_build_of_keycloak-26/javadocs/org/keycloak/models/cache/UserCache.html
UserCache (Keycloak Docs Distribution 26.0.17.redhat-00001 API)
declaration: package: org.keycloak.models.cache, interface: UserCache
keycloakdocsdistributionredhatapi