=== b1 관찰 2 ① 문서 그대로 ===
2
bff:session:sessions:b66634a2-1381-4071-8ceb-0a006fbe1327
bff:session:sessions:c5f7b0c7-cd17-4749-bf3e-6d42c814bb1c

=== b1 관찰 2 ② 문서 그대로 (head -1) ===
bff:session:sessions:b66634a2-1381-4071-8ceb-0a006fbe1327
--- 그 키의 타입과 필드
hash
sessionAttr:SPRING_SECURITY_SAVED_REQUEST
maxInactiveInterval
creationTime
lastAccessedTime
--- TTL: 1771

=== 키가 둘인데 각각 무엇을 담고 있나 ===
bff:session:sessions:b66634a2-1381-4071-8ceb-0a006fbe1327
    sessionAttr:SPRING_SECURITY_SAVED_REQUEST
    maxInactiveInterval
    creationTime
    lastAccessedTime
bff:session:sessions:c5f7b0c7-cd17-4749-bf3e-6d42c814bb1c
    lastAccessedTime
    maxInactiveInterval
    sessionAttr:org.springframework.security.oauth2.client.web.HttpSessionOAuth2AuthorizationRequestRepository.AUTHORIZATION_REQUEST
    creationTime
    sessionAttr:SPRING_SECURITY_LAST_EXCEPTION
    sessionAttr:SPRING_SECURITY_CONTEXT