For now, the "file storage" product is a Node tree in mysql, with content stored in a content-addressed blob store, which is some custom crap I wrote 15 years ago that is still going strong because it's so simple there's not much to go wrong.
We do plan to eventually move the blob storage into Cyrus as well though, because then we have a single replication and backup system rather than needing separate logic to maintain the blob store.
For now, the "file storage" product is a Node tree in mysql, with content stored in a content-addressed blob store, which is some custom crap I wrote 15 years ago that is still going strong because it's so simple there's not much to go wrong.
We do plan to eventually move the blob storage into Cyrus as well though, because then we have a single replication and backup system rather than needing separate logic to maintain the blob store.