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AI-1261 Frontend Error Page
Introduce an in-process UploadNormalizationLimiter to bound concurrent PDF/image normalization (Math.max(2, availableParallelism())). Start the original blob write concurrently with normalization to overlap I/O and CPU, await the original write before writing the normalized blob, and release the decoded upload buffer early to reduce peak memory. Move expensive pdf-lib parsing into normalizeToPdf (validateForUpload now does a cheap magic-byte probe for PDFs), add robust parse/error handling, and generate thumbnails from the normalized PDF bytes. Wire the limiter into the Document module/service, add unit tests for the limiter and updated upload behavior/order, and update documentation to describe the upload memory/concurrency model and API implications.
kmandryk
requested review from
NoorChasib,
alex-struk,
antsand and
dbarkowsky
as code owners
June 9, 2026 23:15
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Summary
address upload-ocr bottleneck
AI-1240
Changes
Testing
Re-run payload-sizes large × 5 VU on the load-test instance to validate OOM/failure-rate acceptance criteria