Upload A File In Signed Parts
What It Does
The client transfers file parts directly to storage using short-lived signed addresses. Platform keeps session bookkeeping and verifies size plus the available digest before making the upload usable.
The Flow
When Something Fails
Storage refusal and database failure have separate outcomes. In particular, completed assembly followed by a process stop can later appear as expiry rather than repaired completion. Large-file integrity remains a product decision.
Open Design Questions
Large-file integrity and storage-first crash repair need explicit decisions.