File Upload Patterns
Implement secure, scalable file uploads with validation, presigned URLs, and virus scanning.
- Difficulty
- intermediate
- Read time
- 1 min read
- Version
- v1.0.0
- Confidence
- established
- Last updated
Quick Reference
File Uploads: Validate by content (magic bytes), not extension. Use presigned URLs for direct-to-cloud uploads (bypass server). Generate random filenames. Scan for malware. Serve from separate domain/CDN. Set size limits client and server side.
Use When
- User file uploads
- Image/document processing
- Large file transfers
- Cloud storage integration
Skip When
- Small form data
- API-only endpoints
- Text-only content
File Upload Patterns
Implement secure, scalable file uploads with validation, presigned URLs, and virus scanning.