85 lines
7.2 KiB
XML
85 lines
7.2 KiB
XML
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<title id="diagram-title">캐시 온도가 결과를 가른다</title>
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<desc id="diagram-description">volatile 모드에서 로그인은 SQL 을 0개 쏜다. refresh 는 딱 한 문장을 쏘는데 CLIENT_SCOPE_CLIENT 의 선택적 스코프 조회이며, 그것도 첫 번째만 쏘고 이후 캐시된다. 그래서 DB 를 세웠을 때 완전 냉시동이면 클라이언트 조회부터 실패해 로그인이 400 이고, CLIENT 캐시만 더우면 refresh 가 500 이며, 완전히 더우면 둘 다 200 이다. A-7 이 표에 적은 것은 그 사이의 한 상태였다.</desc>
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<text class="edge-label" x="144.2" y="655.0">스코프 재계산</text>
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<text class="edge-label" x="131.5" y="315.0">클라이언트 확인</text>
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<text class="edge-label" x="126.0" y="1020.5">캐시 미스</text>
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<g class="actor-symbol emphasis-primary" data-evidence="646-657"><circle cx="110.0" cy="165.0" r="11.0" /><line x1="110.0" y1="181.0" x2="110.0" y2="200.0" /><line x1="92.0" y1="191.0" x2="128.0" y2="191.0" /><line x1="110.0" y1="200.0" x2="95.0" y2="217.0" /><line x1="110.0" y1="200.0" x2="125.0" y2="217.0" /></g>
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<text class="node-label" x="110.0" y="222.0">로그인 · refresh 요청</text>
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<text class="node-label" x="153.0" y="482.0">CLIENT 조회</text>
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<text class="node-detail" x="57.5" y="520.0">select ce1_0.ID from CLIENT</text>
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<rect class="node-shape kind-process emphasis-warning role-control" data-evidence="646-652" x="41.5" y="838.0" width="188.0" height="71.0" rx="7" />
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<text class="node-label" x="135.5" y="865.0">CLIENT_SCOPE_CLIENT 조회</text>
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<text class="node-detail" x="57.5" y="903.0">DEFAULT_SCOPE='f'</text>
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<rect class="node-shape kind-datastore emphasis-primary role-target" data-evidence="657-662" x="41.5" y="1197.8" width="150.0" height="47.3" /><ellipse class="node-shape kind-datastore emphasis-primary role-target" cx="116.5" cy="1197.8" rx="75.0" ry="11.8" /><path class="storage-bottom" d="M 41.5 1245.2 A 75.0 11.8 0 0 0 191.5 1245.2" />
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<text class="node-label" x="116.5" y="1213.0">PostgreSQL</text>
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<text class="node-detail" x="57.5" y="1251.0">캐시 미스 시에만 도달</text>
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