Skip to content

⚡ Bolt: Batch DOM insertions using DocumentFragment - #691

Open
seonghobae wants to merge 4 commits into
mainfrom
bolt/optimize-dom-batching-2316638811992570467
Open

seonghobae wants to merge 4 commits into
mainfrom
bolt/optimize-dom-batching-2316638811992570467

Conversation

@seonghobae

Copy link
Copy Markdown
Collaborator

💡 What: demo.js 파일 내 renderHistory 및 renderJobDetail 함수에서 개별적으로 여러 DOM 노드를 붙이던 로직을 DocumentFragment를 이용해 한 번에 부착(Batching)하도록 리팩토링했습니다. 테스트를 지원하기 위해 mock-dom.mjs에 MockDocumentFragment도 함께 추가했습니다.
🎯 Why: 루프 내부 또는 연속적인 append/appendChild 호출은 브라우저에서 매번 레이아웃 재계산(Reflow)과 다시 그리기(Repaint)를 유발하여 심각한 성능 저하(Layout Thrashing)를 초래할 수 있습니다.
📊 Impact: DOM 삽입 횟수를 데이터 수에 비례하는 N회에서 패널/목록 당 1회로 크게 줄여, 렌더링 과정에서 발생하는 리플로우와 리페인트 오버헤드를 대폭 감소시킵니다.
🔬 Measurement: 기존과 동일한 테스트 스위트(node --test src/test/js/*.test.mjs 및 mvn -B --no-transfer-progress verify)를 실행하여 기능의 완전성을 보장하며, 화면이 느려짐 없이 부드럽게 목록을 그리는 것을 확인할 수 있습니다.


PR created automatically by Jules for task 2316638811992570467 started by @seonghobae

- `demo.js`의 `renderHistory`와 `renderJobDetail`에서 반복적으로 개별 노드를 `appendChild`/`append` 하는 작업을 `DocumentFragment`를 사용하여 한 번에 일괄 처리(Batching)하도록 최적화.
- 불필요한 브라우저 리플로우(Reflow)와 리페인트(Repaint)를 방지하여 렌더링 성능 향상.
- 프론트엔드 테스트 모의 객체인 `mock-dom.mjs`에 `MockDocumentFragment`를 구현하여 테스트 호환성 유지.
- 해당 최적화 내용을 `.jules/bolt.md`에 학습 일지로 기록함.
@google-labs-jules

Copy link
Copy Markdown

👋 Jules, reporting for duty! I'm here to lend a hand with this pull request.

When you start a review, I'll add a 👀 emoji to each comment to let you know I've read it. I'll focus on feedback directed at me and will do my best to stay out of conversations between you and other bots or reviewers to keep the noise down.

I'll push a commit with your requested changes shortly after. Please note there might be a delay between these steps, but rest assured I'm on the job!

For more direct control, you can switch me to Reactive Mode. When this mode is on, I will only act on comments where you specifically mention me with @jules. You can find this option in the Pull Request section of your global Jules UI settings. You can always switch back!

New to Jules? Learn more at jules.google/docs.


For security, I will only act on instructions from the user who triggered this task.

@coderabbitai

coderabbitai Bot commented Oct 6, 2026 •

Copy link
Copy Markdown

Warning

Review limit reached

You've used all free OSS reviews for now. Wait for the free limit to reset to keep reviewing this public repository.

Next included review available in 47 minutes.

Check out review usage here.

View limit details

Limit details: You’ve used the included review currently available.

Learn how review limits work.

Review configuration:

⚙️ Run configuration
  • Configuration used: Organization UI
  • Review profile: CHILL
  • Plan: Advanced
  • Run ID: 3baa3767-97e7-4d34-8bc0-23d2618f5e56
📥 Commits

Reviewing files that changed from the base of the PR and between 06633a2 and b447a20.

📒 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
  • Autopilot · Keep fixing CodeRabbit findings and required CI, and resolving merge conflicts

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

Comment @coderabbitai help to get the list of available commands.

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment

Labels

None yet

Projects

None yet

Development

Successfully merging this pull request may close these issues.

1 participant