feat: 문서 구조 변경 및 tech-visual 스킬 추가
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DongHyeonka
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<svg xmlns="http://www.w3.org/2000/svg" width="964" height="300" viewBox="0 0 964 300" role="img" aria-labelledby="diagram-title diagram-description">
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<title id="diagram-title">반환 부모 수 N이 컬렉션 초기화와 자식 SELECT 횟수를 결정한다</title>
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<desc id="diagram-description">왼쪽의 loadFeed 요청은 한 페이지에서 N개의 FeedItem을 반환한다. 매핑이 각 부모의 Highlight 컬렉션에 접근하면 컬렉션 초기화가 부모마다 한 번씩 일어나 총 N회가 된다. 현재 기준선에서는 배치나 서브셀렉트가 없어 초기화 한 번마다 Highlight SELECT도 한 번 실행되므로 추가 조회가 N회 발생한다. 각 SELECT는 해당 부모의 Highlight 자식 행을 전부 읽는다.</desc>
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<metadata>{"techviz":{"spec_version":"1.1","id":"nplus1-query-fanout","profile":"component-flow"},"source_context":{"document":"/home/donghyeon/workspace/ai-tool/topic-arrange/n+1liner/n+1liner.md","document_sha256":"1bb38964ca2a849690f5355646c1aa988111b4cd4e1055c6cb05cf7e5fc35cde","anchor":{"kind":"marker","value":"nplus1-query-fanout","line":380}},"evidence_policy":"Each factual element cites source lines or is marked assumption.","diagram_only":true}</metadata>
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:root { color-scheme: light; }
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<text class="edge-label" x="672.0" y="78.5">초기화마다 SELECT 1회</text>
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<text class="edge-label" x="331.0" y="78.5">아이템마다 컬렉션 접근</text>
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<text class="node-label" x="160.5" y="87.0">loadFeed(0, N) →</text>
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<text class="node-label" x="160.5" y="105.0">FeedItem N개</text>
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<line class="node-detail-divider" x1="84.0" y1="126.0" x2="237.0" y2="126.0" />
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<text class="node-detail" x="86.0" y="143.0">page size = 반환 부모 수 N</text>
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<text class="node-label" x="501.5" y="97.0">Highlight 컬렉션 초기화 N회</text>
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<line class="node-detail-divider" x1="425.0" y1="118.0" x2="578.0" y2="118.0" />
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<text class="node-detail" x="427.0" y="135.0">collectionFetches = N</text>
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<g id="node-highlight-selects">
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<rect class="node-shape kind-query emphasis-normal role-sink" data-evidence="337-337,384-385" x="752.0" y="70.0" width="167.0" height="71.0" rx="7" />
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<text class="node-label" x="835.5" y="97.0">Highlight SELECT N회</text>
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<line class="node-detail-divider" x1="766.0" y1="118.0" x2="905.0" y2="118.0" />
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<text class="node-detail" x="768.0" y="135.0">부모별 자식 행 전부 조회</text>
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After Width: | Height: | Size: 6.5 KiB |
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