So maybe https://manual.calibre-ebook.com/server.html https://manual.calibre-ebook.com/server.html even if it seems that the database must be on the same machin

So maybe https://manual.calibre-ebook.com/server.html https://manual.calibre-ebook.com/server.html even if it seems that the database must be on the same machine the UI runs on, or be copied to a server with all the books. That could be the criticism of the parent post.