If it is helpful to other people here is how I manage my ebook library with flatfiles and heterogeneous devices (Android, macOS, iOS, Kindle, etc)
I have my own eBook library hosted with copyparty. It is a single binary. Runs on plain files. And speaks OPDS for integration with KOreader (Kindle) or Readest (iOS/macOS). https://github.com/9001/copyparty#opds-feeds
It also speaks webdav so I can quickly sync everything via rclone to an SD card on devices like an Android tablet.
I really like the convenience of flat files and multiple protocols.
Does Calibre support S3 these days as a storage backend?
I am currently in the weeds learning how to set up Calibre, but haven't imported my library yet.
Is there an advantage to using something like this instead?
If it is helpful to other people here is how I manage my ebook library with flatfiles and heterogeneous devices (Android, macOS, iOS, Kindle, etc)
I have my own eBook library hosted with copyparty. It is a single binary. Runs on plain files. And speaks OPDS for integration with KOreader (Kindle) or Readest (iOS/macOS). https://github.com/9001/copyparty#opds-feeds
It also speaks webdav so I can quickly sync everything via rclone to an SD card on devices like an Android tablet.
I really like the convenience of flat files and multiple protocols.
For someone looking for a bit more than this, I recently got Bookorbit running and its quite powerful for being so young. https://bookorbit.app/
Now if only I had a good self hosted object store option
Garage?
https://garagehq.deuxfleurs.fr/