Zero-Server Storage: Streaming Sensitive PDFs Directly from In-Memory RAM

When dealing with government compliance certificates, national IDs, and tax documents, privacy and data protection are paramount.

The Threat Vector of Server-Stored PDFs

Storing generated PDFs on persistent disk or public object storage buckets introduces compliance and security risks:

• Risk of unauthorized bucket enumeration.
• Orphaned temporary files remaining on local disk indefinitely.
• Potential data breach liability under the Kenya Data Protection Act (KDPA).

The In-Memory Buffer Solution

By utilizing PDF-Lib within Next.js Serverless Route Handlers, documents are synthesized directly in RAM buffers and streamed to the user's browser response with:

Content-Type: application/pdf
Content-Disposition: attachment; filename="KRA_Certificate.pdf"

Once the response stream completes, the buffer is automatically garbage-collected. No files ever touch the server filesystem.