[hnarn]

According to this link:

https://vonng.com/en/pg/pgfs/

> The magic is: JuiceFS also supports using PostgreSQL as both metadata and object data storage backend! This means you only need to change JuiceFS’s backend to an existing PostgreSQL instance to get a database-based “filesystem.”

Sounds ideal for your kind of situation where a filesystem is being abused as a database :-)