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⚡ Bolt: [performance improvement] Memoize grouping derived state in tables - #26

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⚡ Bolt: [performance improvement] Memoize grouping derived state in tables#26
seonghobae wants to merge 3 commits into
mainfrom
bolt/memoize-table-grouping-2026402593581670855

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@seonghobae

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💡 What: Memoized the groupByLevel and groupByType derived state calculations in UsecaseTable and ActorTable components.
🎯 Why: Both components manage internal state for tracking collapsed groups. Toggling a group triggers a component re-render, which was previously recalculating the entire O(N) grouping operation across the array of usecases or actors even though the underlying data hadn't changed.
📊 Impact: Prevents main-thread blocking during user interactions (expanding/collapsing). For a table of 100+ items, this guarantees instant visual feedback without redundant layout/compute overhead.
🔬 Measurement: Load the project page with a large number of use cases or actors. Profile performance while rapidly expanding/collapsing sections. Re-renders will only execute React reconciliation, bypassing the grouping functions entirely.


PR created automatically by Jules for task 2026402593581670855 started by @seonghobae

Extracts O(N) grouping calls into `useMemo` hooks to prevent recalculating table groups every time a local row toggle triggers a re-render.
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📒 Files selected for processing (3)
  • .jules/bolt.md
  • apps/app/app/components/ActorTable.tsx
  • apps/app/app/components/UsecaseTable.tsx
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Extracts O(N) grouping calls into `useMemo` hooks to prevent recalculating table groups every time a local row toggle triggers a re-render.
Extracts O(N) grouping calls into `useMemo` hooks to prevent recalculating table groups every time a local row toggle triggers a re-render.
@seonghobae

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통합 PR에서 유효 변경만 선별해 다시 다루고 있어 이 중복/잔여 PR은 정리합니다. #39 및 vibemafiaclub/vooster#34를 기준으로 후속 검토를 진행합니다.

@seonghobae seonghobae closed this Jul 7, 2026
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