We are having a really high cardinality of tags for the prometheus metrics "keycloak_request_duration_bucket" because the 404 resources are logged with the url part.

Some tag examples:

resource="realms,auth/realms/myrealm/administrador"

resource="realms,auth/realms/myrealm/administrat"

resource="realms,auth/realms/myrealm/adminpro"

resource="realms,auth/realms/myrealm/admins"

 ....

Ideally the resource should be written only as "URI_NOT_FOUND" (like java spring does) or other constant value.