⚡ Bolt: 셀 렌더링 성능 최적화 (DOM 할당 오버헤드 감소) - #362
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Caching unattached template nodes and instantiating them via `.cloneNode(false)` in cell renderers like owner and status badges reduces JS-to-C++ instantiation overhead during O(N) DOM rendering loops.
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📝 WalkthroughWalkthrough오너와 상태 배지 셀 렌더러가 배지 DOM을 매번 생성하지 않고 캐시된 템플릿을 복제하도록 변경되었으며, 관련 학습 지침이 추가되었습니다. Changes배지 템플릿 캐싱
Estimated code review effort: 2 (Simple) | ~5 minutes Suggested reviewers: 🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
✨ Finishing Touches📝 Generate docstrings
🧪 Generate unit tests (beta)
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Pull request overview
This PR applies the existing “⚡ Bolt” rendering optimization pattern in app.js by caching unattached DOM template nodes for owner/status badges and cloning them via cloneNode(false) to reduce repeated document.createElement() allocations in the task table hot path.
Changes:
- Cache an
ownerBadgeTemplatespan and create owner badges viacloneNode(false)increateOwnerCellContent. - Cache a
statusBadgeTemplatespan and create status badges viacloneNode(false)increateStatusCellContent. - Document the optimization as a new entry in
.jules/bolt.md.
Reviewed changes
Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.
| File | Description |
|---|---|
| app.js | Replaces per-cell createElement('span') calls for owner/status badges with cached template cloning to reduce DOM allocation overhead in O(N) render loops. |
| .jules/bolt.md | Adds a dated learning/action note capturing the badge template-caching optimization. |
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🧹 Nitpick comments (1)
.jules/bolt.md (1)
7-9: 📐 Maintainability & Code Quality | 🔵 Trivial | ⚡ Quick win캐싱 지침을 무상태 템플릿으로 한정해 주세요.
“반복적으로 생성되는 모든 DOM 요소”는 이벤트 리스너, 자식 노드 또는 mutable 상태를 가진 요소까지 캐싱하도록 해석될 수 있습니다. 연결되지 않은 무상태 템플릿을 복제하는 경우에만 적용하도록 명시해 주세요.
🤖 Prompt for AI Agents
Verify each finding against current code. Fix only still-valid issues, skip the rest with a brief reason, keep changes minimal, and validate. In @.jules/bolt.md around lines 7 - 9, Update the “Action” guidance in the badge DOM allocations entry to limit template caching to detached, stateless templates only. Clarify that cached elements must not contain event listeners, child nodes, or mutable state, and that caching applies only when cloning those unattached templates.
🤖 Prompt for all review comments with AI agents
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.
Nitpick comments:
In @.jules/bolt.md:
- Around line 7-9: Update the “Action” guidance in the badge DOM allocations
entry to limit template caching to detached, stateless templates only. Clarify
that cached elements must not contain event listeners, child nodes, or mutable
state, and that caching applies only when cloning those unattached templates.
ℹ️ Review info
⚙️ Run configuration
Configuration used: Organization UI
Review profile: CHILL
Plan: Pro Plus
Run ID: d331deb8-5485-488b-99ed-30e56419014d
📒 Files selected for processing (2)
.jules/bolt.mdapp.js
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Pull request overview
OpenCode cannot approve yet because required coverage evidence did not pass.
Review outcome
1. HIGH .github/workflows/opencode-review.yml:1 - Coverage evidence did not prove required test/docstring evidence
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Problem: The required coverage-evidence job result was
failure, so OpenCode cannot establish approval sufficiency for this head. -
Root cause: Automated approval is only valid when the same-head coverage-evidence job proves supported repository test suites passed and configured docstring gates passed or were advisory, or reports not applicable because no supported source files or package manifests exist. Missing, failed, skipped, unavailable, or unsupported-tooling test evidence is a blocker.
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Fix: Install or configure the repository test/docstring evidence tooling when source files or package manifests exist, rerun the current-head coverage-evidence job, and approve only after it reports
successwith required evidence or explicit no-source not-applicable evidence. -
Regression test: Keep the approval branch checking
needs.coverage-evidence.result == successbefore posting APPROVE, and publish REQUEST_CHANGES when coverage-evidence blocker states such as cancelled, skipped, failed, unsupported-tooling, or below-100 evidence are present. -
Result: REQUEST_CHANGES
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Reason: coverage-evidence result was
failure, so required test/docstring evidence was not proven for current head6b47f72f8523f1166864dd63839321c86f7f4945. -
Head SHA:
6b47f72f8523f1166864dd63839321c86f7f4945 -
Workflow run: 30279451288
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Workflow attempt: 1
Coverage evidence
Coverage evidence job did not run or did not publish coverage evidence.
Changed-File Evidence Map
flowchart LR
PR["PR changed files"] --> Evidence["OpenCode bounded evidence"]
Evidence --> S1["Changed file (2 files)"]
S1 --> I1["repository behavior"]
I1 --> R1["Review risk: Changed file (2 files)"]
R1 --> V1["required checks"]
OpenCode Review Overview
Pull request overviewOpenCode cannot approve yet because required coverage evidence did not pass. Review outcome1. HIGH .github/workflows/opencode-review.yml:1 - Coverage evidence did not prove required test/docstring evidence
Coverage evidenceCoverage evidence job did not run or did not publish coverage evidence. Changed-File Evidence Mapflowchart LR
PR["PR changed files"] --> Evidence["OpenCode bounded evidence"]
Evidence --> S1["Changed file (2 files)"]
S1 --> I1["repository behavior"]
I1 --> R1["Review risk: Changed file (2 files)"]
R1 --> V1["required checks"]
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Understood. Acknowledging that this work is now obsolete and stopping work on this task. |
💡 무엇을
app.js의 createOwnerCellContent와 createStatusCellContent 함수 내부에서 반복적으로 실행되던
document.createElement('span')을 모듈 스코프의 unattached template으로 캐싱하고.cloneNode(false)를 사용하도록 변경했습니다.🎯 왜
작업 테이블을 렌더링할 때, 특히 작업이 많을 경우
document.createElement로 인한 JS-to-C++ 할당 오버헤드와 가비지 컬렉션 부담이 커져 성능 저하(렌더링 블로킹)가 발생합니다. 반복적인 DOM 구조를 생성하는 hot-path에서는.cloneNode(false)를 활용해 오버헤드를 감소시킬 수 있습니다.📊 영향
대량의 행을 렌더링할 때 (O(N) 렌더 루프) 담당자 및 진행 상태 셀을 그리는 비용이 눈에 띄게 감소하여, 전체 테이블 UI 렌더링 속도와 반응성이 개선됩니다.
🔬 측정
앱에 1,000개 이상의 더미 태스크를 CSV로 import 하거나 브라우저 프로파일러(DevTools Performance 탭)로 renderAll() 사이클에서의 스크립팅 시간을 측정 시 렌더링 소요 시간이 단축된 것을 확인할 수 있습니다.
PR created automatically by Jules for task 868495106936639033 started by @seonghobae
Summary by CodeRabbit
성능 개선
문서