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⚡ Bolt: Memoize table grouping to reduce re-renders - #2

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⚡ Bolt: Memoize table grouping to reduce re-renders#2
seonghobae wants to merge 1 commit into
mainfrom
bolt-memoize-tables-7215124377204132626

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@seonghobae

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💡 What: Wrapped groupByLevel(usecases) in UsecaseTable.tsx and groupByType(actors) in ActorTable.tsx with React.useMemo.

🎯 Why: To prevent the potentially expensive grouping operations from re-executing every time a user toggles a group collapse/expand (which triggers a state update and re-render).

📊 Impact: Reduces CPU work on UI interaction by ensuring the grouping runs only when the usecases or actors arrays actually change, rather than on every state change.

🔬 Measurement: Verify by loading a project with many use cases and actors, then expanding/collapsing rows. CPU usage during interaction will be lower.


PR created automatically by Jules for task 7215124377204132626 started by @seonghobae

Added React.useMemo() to `UsecaseTable` and `ActorTable` to prevent the
`groupByLevel` and `groupByType` functions from running on every toggle
of the row collapse state, thereby preventing redundant calculations.
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coderabbitai Bot commented May 31, 2026

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Review Change Stack

📝 Walkthrough

전체 요약

ActorTable과 UsecaseTable 컴포넌트에서 useMemo 훅을 도입하여 그룹화 계산 결과를 메모이제이션합니다. 각 컴포넌트는 의존성 배열을 통해 필요한 경우에만 그룹화를 재계산하도록 최적화됩니다.

변경사항

컴포넌트 그룹화 메모이제이션

계층 / 파일 요약
useMemo를 통한 그룹화 메모이제이션
apps/app/app/components/ActorTable.tsx, apps/app/app/components/UsecaseTable.tsx
ActorTable과 UsecaseTable에서 React import에 useMemo를 추가하고, 각각 groupByType(actors)groupByLevel(usecases) 계산을 useMemo로 감싸 의존성 변경 시에만 재계산되도록 최적화했습니다.

추정 코드 리뷰 난이도

🎯 1 (간단함) | ⏱️ ~3분

시 (Poem)

토끼가 외친다, 메모리를 절약하며 ✨
useMemo로 계산을 한 번만! 🐰
그룹화는 다시 달리지 않고,
필요할 때만 슬금슬금 움직인다
성능 최적화, 작지만 쏘옥! ⚡


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❌ Failed checks (1 error)

Check name Status Explanation Resolution
Docstring Coverage ❌ Error Docstring coverage is 0.00% which is insufficient. The required threshold is 100.00%. Write docstrings for the functions missing them to satisfy the coverage threshold.
✅ Passed checks (4 passed)
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Linked Issues check ✅ Passed Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check ✅ Passed Check skipped because no linked issues were found for this pull request.
✨ Finishing Touches
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  • Create stacked PR
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🧪 Generate unit tests (beta)
  • Create PR with unit tests
  • Commit unit tests in branch bolt-memoize-tables-7215124377204132626
✨ Simplify code
  • Create PR with simplified code
  • Commit simplified code in branch bolt-memoize-tables-7215124377204132626

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seonghobae pushed a commit that referenced this pull request Jun 12, 2026
Cycle 260602-01 checkpoint #2: record the two remaining `.body as` casts
(impact revision-list, status) as the deferred typed-client tail of the
shared-api-contracts finding; KEEP gate 7.A2 (negative-universal stays,
runtime tests cover the version literal). Records audit reasoning in learnings.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
@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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