⚡ Bolt: [performance improvement] content-visibility 적용을 통한 초기 렌더링 지연시간 최적화#41
⚡ Bolt: [performance improvement] content-visibility 적용을 통한 초기 렌더링 지연시간 최적화#41seonghobae wants to merge 1 commit into
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- Add content-visibility and contain-intrinsic-size to .section and .site-footer - Reduces initial layout duration - Update .jules/bolt.md with learning
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Pull request overview
styles.css의 주요 섹션 및 푸터에 content-visibility: auto/contain-intrinsic-size를 적용해, 화면 밖 콘텐츠의 렌더링을 지연시키고 초기 레이아웃 계산 비용을 줄이려는 성능 최적화 PR입니다.
Changes:
.section에content-visibility: auto및contain-intrinsic-size(placeholder 크기) 추가.site-footer에 동일한 성능 최적화 속성 추가- 성능 최적화 학습/액션 로그를
.jules/bolt.md에 기록 추가
Reviewed changes
Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.
| File | Description |
|---|---|
| styles.css | 오프스크린 영역 렌더링을 지연시켜 초기 Layout/Style 계산 비용을 낮추는 CSS 최적화 적용 |
| .jules/bolt.md | content-visibility 기반 최적화에 대한 Learning/Action 로그 추가 |
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| **Action:** `isInitialDefault` 조건을 추가하여 초기 로드 시 불필요한 DOM 순회 코드가 실행되지 않도록 개선했습니다. | ||
| ## 2024-06-27 - content-visibility를 이용한 초기 렌더링 성능 최적화 | ||
| **Learning:** 초기 로드 시 화면 바깥에 위치한 요소들(.section, .site-footer)로 인해 초기 Layout 시간과 Style Recalculation 시간이 불필요하게 소요됨을 확인했습니다. | ||
| **Action:** `content-visibility: auto` 속성을 적용해 브라우저가 화면 바깥 요소의 렌더링을 지연시키도록 하고, `contain-intrinsic-size`를 지정하여 스크롤 점프를 방지하도록 최적화합니다. |
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Pull request overview
OpenCode reviewed the current-head evidence but found unresolved reviewer or review-agent threads before approval.
Findings
1. HIGH .github/workflows/opencode-review.yml:1 - Unresolved reviewer thread blocks automated approval
- Problem: OpenCode reached an APPROVE control result, but the approval step found unresolved, non-outdated human or review-agent thread evidence on the current pull request.
- Root cause: Reviewer and review-agent feedback can arrive after bounded model evidence is prepared, so the approval step must re-query GitHub immediately before publishing an approval.
- Fix: Address or resolve the listed reviewer thread(s), then re-run OpenCode on the current head.
- Regression test: Keep the approval gate querying reviewThreads(first: 100) after model output and before create_pull_review APPROVE, including bot review agents other than OpenCode itself.
Review thread evidence
Latest unresolved reviewer thread evidence
.jules/bolt.md line 9
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Latest reviewer comment: @copilot-pull-request-reviewer at 2026-07-01T15:01:00Z
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Comment URL: #41 (comment)
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Comment excerpt: 문서가 완료된 변경 사항을 기록하는 형태(바로 위 항목은 과거형)인데, 새 항목의 Action 문장이 현재/미래형(“최적화합니다”)이라 실제 적용 여부가 불명확합니다. 과거형으로 바꿔 이번 PR에서 적용이 완료되었음을 명확히 해주세요.
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Result: REQUEST_CHANGES
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Reason: unresolved reviewer or review-agent thread(s) were present before approval.
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Head SHA:
ef8347042ec7ab99bd17dba9a73e7832a6735839 -
Workflow run: 28526835222
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Workflow attempt: 1
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 reviewed the current-head evidence but found unresolved reviewer or review-agent threads before approval. Findings1. HIGH .github/workflows/opencode-review.yml:1 - Unresolved reviewer thread blocks automated approval
Review thread evidenceLatest unresolved reviewer thread evidence
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💡 What
styles.css의.section및.site-footer클래스에content-visibility: auto와contain-intrinsic-size속성을 추가했습니다.🎯 Why
화면 바깥에 위치한 렌더링 비용이 큰 콘텐츠 요소들(.section, .site-footer)로 인해 초기 로드 시 초기 Layout 시간과 Style Recalculation 시간이 불필요하게 소요되는 병목 현상을 방지하기 위해서입니다.
content-visibility: auto를 적용하면 브라우저가 화면 바깥 요소의 렌더링을 지연시킵니다. 또한contain-intrinsic-size를 지정하여 스크롤 점프를 방지했습니다.📊 Impact
테스트 결과 초기 렌더링 지연시간(Layout Duration)이 최적화되었습니다.
🔬 Measurement
초기 Layout Duration 시간을 측정하는 Playwright 스크립트를 사용하여 개선 효과를 확인했습니다. 최적화 후 초기 페이지 로딩 시 Layout을 계산하는 시간이 확연히 감소함을 확인할 수 있습니다.
PR created automatically by Jules for task 11792926298536175058 started by @seonghobae