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⚡ Bolt: DocumentFragment를 사용한 DOM 조작 최적화 - #708

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bolt/optimize-dom-fragments-5029288856828258806
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seonghobae wants to merge 4 commits into
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bolt/optimize-dom-fragments-5029288856828258806

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@seonghobae

@seonghobae seonghobae commented Oct 14, 2026 •

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💡 What: demo.js의 DOM 조작 함수(renderHistory, renderJobDetail, addDetailRow)를 DocumentFragment를 사용하도록 최적화.
🎯 Why: 루프 내에서 직접 appendChild를 호출하는 방식은 반복적인 브라우저 리플로우(reflow)를 유발하여 성능 병목이 될 수 있음.
📊 Impact: UI 렌더링 시 발생하던 다수의 DOM 갱신을 한 번의 버퍼 삽입으로 줄여 렌더링 속도 향상.
🔬 Measurement: mvn test 및 JS Mock DOM 테스트(node --test src/test/js/demo-integration.test.mjs) 통과 여부로 무결성 확인 완료.


PR created automatically by Jules for task 5029288856828258806 started by @seonghobae

Summary by CodeRabbit

  • 성능 개선
    • 기록 목록과 작업 상세 정보를 화면에 표시할 때 변경 사항을 모아 한 번에 반영하도록 개선했습니다. 화면에 표시되는 데이터와 복구 증거 정보는 기존과 동일하게 유지됩니다.

- `renderHistory`와 `renderJobDetail`에서 반복문을 통한 `appendChild` 호출을 `DocumentFragment` 버퍼를 사용하도록 변경하여 브라우저의 리플로우 횟수를 최소화하고 렌더링 성능 향상.
- 관련 테스트 코드 (`mock-dom.mjs`, `demo-integration.test.mjs`, `dom-utils.test.mjs`)에 `MockDocumentFragment` 및 부모 요소의 `appendChild` 지원 기능 업데이트.
- `.jules/bolt.md` 저널에 성능 관련 교훈 추가.
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coderabbitai Bot commented Oct 14, 2026 •

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Review in Change Stack →

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info
⚙️ Run configuration
  • Configuration used: Organization UI
  • Review profile: CHILL
  • Plan: Advanced
  • Run ID: ce1c65b1-729b-43ea-987e-3bd3359ea4c4
📥 Commits

Reviewing files that changed from the base of the PR and between 06633a2 and 5756b99.

📒 Files selected for processing: 5
  • .jules/bolt.md
  • src/main/resources/static/assets/viewer/demo.js
  • src/test/js/demo-integration.test.mjs
  • src/test/js/dom-utils.test.mjs
  • src/test/js/mock-dom.mjs

Included review availability: This review used your included allowance. Your plan provides up to 1 included review per hour; 0 remain after this review.

📝 Walkthrough

이력 행과 작업 상세 항목을 DocumentFragment에 모은 뒤 대상 본문에 한 번에 추가합니다. 테스트용 DOM mock은 fragment 자식 노드 이동과 fragment 비우기를 지원합니다.

Changes: DocumentFragment 렌더링

Layer / File(s) Summary
이력 및 상세 항목 일괄 렌더링
src/main/resources/static/assets/viewer/demo.js, .jules/bolt.md
renderHistory는 이력 행을 fragment에 모아 본문에 추가합니다. renderJobDetail은 상세 항목을 fragment에 모아 추가합니다. 렌더링 항목과 값 변환은 유지되며, 복구 증거 갱신도 계속 수행합니다.
테스트 DOM의 fragment 지원
src/test/js/mock-dom.mjs, src/test/js/demo-integration.test.mjs, src/test/js/dom-utils.test.mjs
DOM mock에 MockDocumentFragment와 fragment 자식 노드 이동 처리를 추가합니다. 두 테스트 문서 mock은 createDocumentFragment()를 제공합니다.

Priority: ⬇️ Low

Estimated code review effort: 2 (Simple) | ~10 minutes

Change: Refactor

Merge Risk: ⚪ Minimal · up to cc148

Merge Risk: ⚪ Minimal · up to cc148

The change batches history and detail rendering without an identified behavior regression; no actionable merge-blocking risk remains.

Pre-merge checks: Passed 4 · Failed 1

Failed Failed checks: 1 warning

Check name Status Explanation Resolution
Docstring Coverage Warning Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 4 functions across 4 files. (1 skipped: 1 … Write docstrings for the functions missing them to satisfy the coverage threshold.
Passed Passed checks: 4 passed
Check name Status Explanation
Description Check Passed Check skipped - CodeRabbit’s high-level summary is enabled.
Title check Passed 제목은 DocumentFragment를 사용한 DOM 조작 최적화라는 PR의 주요 변경 사항을 정확하고 간결하게 설명합니다.
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.
Full details: Docstring Coverage

Explanation

Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 4 functions across 4 files. (1 skipped: 1 unsupported.)

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