Domain registrations can get expensive and are a variable recurring cost*, so subdomains (which are free) are the natural choice.
Or for personal instances like mine, I don’t even know what I would name it that would make sense to have as a whole TLD.
It would be nice if it supported domain delegation like Matrix does.
I’m generally not a big fan of how Lemmy just assumes its got the domain all for itself forever. I would have liked to have the webfinger API live on the root, so I can have clean handles and community names, but the inbox endpoints and UI would be on a subdomain.
I’ve been thinking of making some proxy thing that can intelligently route ActivityPub from the root to Lemmy/Mastodon/Pixelfed and whatnot so that they can behave like one big instance and browse the same content but differently, but it sounds like as big of a project as making Lemmy itself.
ShittyKopper@lemmy.blahaj.zone 11 months ago
You also can’t reuse a domain between software installations (some exceptions apply when migrating between software of the same “family tree”, e.g. migrating from a mastodon instance to glitch, or migrating between misskey forks) due to how federation works. Hell, reinstalling the same exact software can break federation if you wiped your database in the meanwhile.
Some software offer a “split domain” approach where the software itself is installed in a subdomain like mastodon.example.com but with user handles on a separate domain (usually the root domain, like @example.com) but I am not too sure on the reusability of that, and it’s not an easy thing to implement (Lemmy won’t deal with that correctly and will always use the full domain for anyone on a split domain instance).