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Design Patterns file-uploads recommended

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.

Tags

file-upload s3 presigned-url security storage

Discussion