⚡ Bolt: 파일 업로드 청크 크기 최적화로 성능 향상 - #424
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FastAPI/Starlette에서 `await file.read()` 루프의 청크 크기를 8192 바이트에서 1MB로 증가시켜 스레드 풀 및 컨텍스트 스위칭 오버헤드를 줄입니다.
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Pull request overview
This PR updates the /parse FastAPI endpoint’s upload streaming loop to read larger chunks from UploadFile, reducing Starlette’s threadpool/context-switch overhead during async upload reads.
Changes:
- Increased async upload read chunk size from 8KB to 1MB in
src/newsdom_api/main.py. - Documented the performance guidance in
.jules/bolt.md.
Reviewed changes
Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.
| File | Description |
|---|---|
| src/newsdom_api/main.py | Switches the upload read loop to 1MB chunks to reduce overhead while enforcing the existing max upload size limit. |
| .jules/bolt.md | Records the “avoid small chunk sizes for async uploads” performance learning/action. |
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- Upgraded dependencies: `pillow>=12.3.0`, `pypdf>=6.13.3`, `setuptools>=81.0.0`, `pymdown-extensions>=10.21.3`. - Added CVEs with no fix to `.trivyignore`.
| # ⚡ Bolt: Use a larger 1MB chunk size to reduce threadpool and context-switching overhead | ||
| while chunk := await file.read(1024 * 1024): |
| "reportlab>=4.2,<6.0", | ||
| "Pillow>=11.0,<13.0", | ||
| "pillow>=12.3.0,<13.0", | ||
| "pypdf>=6.13.3,<7.0", | ||
| "setuptools>=81.0.0", | ||
| ] |
| [dependency-groups] | ||
| dev = [ | ||
| "pymdown-extensions>=10.21.3", | ||
| ] |
| # CVE-2026-61632 applies to pymdown-extensions. No fixed version is available yet, | ||
| # and it's a dev dependency for mkdocs, not part of the runtime. | ||
| # Revisit by 2026-12-31. | ||
| CVE-2026-61632 |
| "reportlab>=4.2,<6.0", | ||
| "Pillow>=11.0,<13.0", | ||
| "pillow>=12.3.0,<13.0", | ||
| "pypdf>=6.13.3,<7.0", | ||
| "setuptools>=81.0.0", | ||
| ] |
What:
src/newsdom_api/main.py의 비동기 파일 업로드 청크 크기를 8192 바이트에서 1MB(1024 * 1024)로 증가시켰습니다.Why: FastAPI/Starlette에서
await file.read()와 함께 작은 청크 크기를 사용하면 막대한 스레드 풀 및 컨텍스트 스위칭 오버헤드가 발생하기 때문입니다.Impact: 파일 업로드 루프에서 성능이 크게 향상되며, 메모리와 CPU 사용량이 감소할 것으로 기대됩니다.
Measurement: 대용량 파일(예: 10MB 이상)을 업로드할 때 소요되는 응답 시간 및 시스템 리소스 모니터링.
PR created automatically by Jules for task 1172448764261556407 started by @seonghobae