=== app1 로그인 직후 Keycloak 세션 ===
     user_session_id      | client_sessions 
--------------------------+-----------------
 oqOjHekin4JU-BZjgQLjUByW |               1
(1 row)

  Redis 키: 1
    bff:session:sessions:6e0d9af4-2c8f-47d2-bf83-8b1e9670c679
  PostgreSQL authorized client: 1 행