[nells]

Yes? It’s written in RoR.

[datalopers]

Is the ActivityPub spec just as bad, or would it be performant if written in a proper language?

[goneri]

Pleroma is an Mastodon clone written in Elixir https://git.pleroma.social/pleroma/pleroma

[tpm]

There are other clients, like gotosocial written in Go, so a comparison is possible, but not sure if someone has already done that.