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feat: 가상화 문서들 추가

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DongHyeonka
2026-09-10 08:54:05 +09:00
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docs/n+1liner/final/assets/diagrams/nplus1-query-fanout/nplus1-query-fanout.svg
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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">
<title id="diagram-title">반환 부모 수 N이 컬렉션 초기화와 자식 SELECT 횟수를 결정한다</title>
<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>
<metadata>{&quot;techviz&quot;:{&quot;spec_version&quot;:&quot;1.1&quot;,&quot;id&quot;:&quot;nplus1-query-fanout&quot;,&quot;profile&quot;:&quot;component-flow&quot;},&quot;source_context&quot;:{&quot;document&quot;:&quot;/home/donghyeon/workspace/ai-tool/topic-arrange/n+1liner/n+1liner.md&quot;,&quot;document_sha256&quot;:&quot;1bb38964ca2a849690f5355646c1aa988111b4cd4e1055c6cb05cf7e5fc35cde&quot;,&quot;anchor&quot;:{&quot;kind&quot;:&quot;marker&quot;,&quot;value&quot;:&quot;nplus1-query-fanout&quot;,&quot;line&quot;:380}},&quot;evidence_policy&quot;:&quot;Each factual element cites source lines or is marked assumption.&quot;,&quot;diagram_only&quot;:true}</metadata>
<metadata>{&quot;techviz&quot;:{&quot;spec_version&quot;:&quot;1.1&quot;,&quot;id&quot;:&quot;nplus1-query-fanout&quot;,&quot;profile&quot;:&quot;component-flow&quot;},&quot;source_context&quot;:{&quot;document&quot;:&quot;docs/n+1liner/final/document.md&quot;,&quot;document_sha256&quot;:&quot;f9e048a68db0ab82078955bf611b06a71a0033539e0c87ff0aa0d620a3126e36&quot;,&quot;anchor&quot;:{&quot;kind&quot;:&quot;heading&quot;,&quot;value&quot;:&quot;6.2 실측 — 조회량이 N에 정확히 비례한다&quot;,&quot;line&quot;:380}},&quot;evidence_policy&quot;:&quot;Each factual element cites source lines or is marked assumption.&quot;,&quot;diagram_only&quot;:true}</metadata>
<defs>
<marker id="arrow" viewBox="0 0 10 10" refX="9" refY="5" markerWidth="7" markerHeight="7" orient="auto-start-reverse">
<path d="M 0 0 L 10 5 L 0 10 z" />
@@ -50,27 +50,27 @@
</style>
</defs>
<rect class="canvas" width="964" height="300" />
<polyline class="edge kind-request style-solid emphasis-normal" points="592.0,105.5 672.0,105.5 672.0,105.5 752.0,105.5" data-evidence="337-337,384-384" />
<rect class="edge-label-bg" x="612.8" y="63.5" width="118.5" height="22" rx="3" />
<text class="edge-label" x="672.0" y="78.5">초기화마다 SELECT 1회</text>
<polyline class="edge kind-request style-solid emphasis-primary" points="251.0,105.5 331.0,105.5 331.0,105.5 411.0,105.5" data-evidence="384-384" />
<rect class="edge-label-bg" x="281.8" y="63.5" width="98.4" height="22" rx="3" />
<text class="edge-label" x="331.0" y="78.5">아이템마다 컬렉션 접근</text>
<polyline class="edge kind-request style-solid emphasis-normal" points="592.0,105.5 672.0,105.5 672.0,105.5 752.0,105.5" data-evidence="374-375,437-439" />
<rect class="edge-label-bg" x="632.9" y="63.5" width="78.3" height="22" rx="3" />
<text class="edge-label" x="672.0" y="78.5">SELECT 실행</text>
<polyline class="edge kind-request style-solid emphasis-primary" points="251.0,105.5 331.0,105.5 331.0,105.5 411.0,105.5" data-evidence="437-439" />
<rect class="edge-label-bg" x="301.9" y="63.5" width="58.2" height="22" rx="3" />
<text class="edge-label" x="331.0" y="78.5">컬렉션 접근</text>
<g id="node-feed-request">
<rect class="node-shape kind-request emphasis-normal role-source" data-evidence="341-341,398-398" x="70.0" y="60.0" width="181.0" height="91.0" rx="7" />
<rect class="node-shape kind-request emphasis-normal role-source" data-evidence="382-385,455-456" x="70.0" y="60.0" width="181.0" height="91.0" rx="7" />
<text class="node-label" x="160.5" y="87.0">loadFeed(0, N) →</text>
<text class="node-label" x="160.5" y="105.0">FeedItem N개</text>
<line class="node-detail-divider" x1="84.0" y1="126.0" x2="237.0" y2="126.0" />
<text class="node-detail" x="86.0" y="143.0">page size = 반환 부모 수 N</text>
</g>
<g id="node-collection-initializations">
<rect class="node-shape kind-operation emphasis-primary role-service" data-evidence="337-337,378-384" x="411.0" y="70.0" width="181.0" height="71.0" rx="7" />
<rect class="node-shape kind-operation emphasis-primary role-service" data-evidence="374-375,431-431,437-439" x="411.0" y="70.0" width="181.0" height="71.0" rx="7" />
<text class="node-label" x="501.5" y="97.0">Highlight 컬렉션 초기화 N회</text>
<line class="node-detail-divider" x1="425.0" y1="118.0" x2="578.0" y2="118.0" />
<text class="node-detail" x="427.0" y="135.0">collectionFetches = N</text>
</g>
<g id="node-highlight-selects">
<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" />
<rect class="node-shape kind-query emphasis-normal role-sink" data-evidence="374-375,437-442" x="752.0" y="70.0" width="167.0" height="71.0" rx="7" />
<text class="node-label" x="835.5" y="97.0">Highlight SELECT N회</text>
<line class="node-detail-divider" x1="766.0" y1="118.0" x2="905.0" y2="118.0" />
<text class="node-detail" x="768.0" y="135.0">부모별 자식 행 전부 조회</text>
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