Jortage Proxy

A miniature S3-to-S3 proxy that accepts incoming requests, hashes the uploaded file, stores their desired path in an MVStore key-value store, along with the hash, and then uploads the original file to a backing S3 server named after the hash to offer limited deduplication.

It rejects any attempt to delete files, as this is designed for Project Jortage, a fediverse storage pool. Mastodon won't ever attempt to delete media, and allowing people to would allow them to yank media that isn't theirs.