93 lines
7.8 KiB
XML
93 lines
7.8 KiB
XML
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<title id="diagram-title">세션 공유가 실제로 지나는 경로</title>
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<desc id="diagram-description">keycloak-0 과 keycloak-1 은 JGROUPS_PING 테이블을 통해 서로를 발견하고 클러스터 뷰를 형성한다. 그러나 sessions 캐시의 엔트리는 노드 사이로 복제되지 않으며, 각 노드는 자기가 처리한 로그인만 캐시한다. 노드 A 로 로그인한 세션을 노드 B 가 아는 이유는 노드 B 가 PostgreSQL 의 OFFLINE_USER_SESSION 을 직접 읽기 때문이고, 이는 반대편 노드가 날린 SQL 을 문장 로깅으로 잡아 확인했다.</desc>
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<text class="edge-label" x="330.0" y="124.0">멤버 등록</text>
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<text class="node-detail" x="86.0" y="176.5">자기 처리분만 캐시</text>
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<text class="node-detail" x="86.0" y="319.5">refresh 시 DB 조회</text>
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<text class="node-detail" x="408.0" y="138.0">노드 둘 등록</text>
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<text class="node-detail" x="396.0" y="340.0">offline_flag='0'</text>
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<text class="node-detail" x="396.0" y="356.0">두 노드 공용</text>
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