I've actually tried to write an ActivityPub server in Vapor! I must admit I didn't get very far on the outbound part using Vapor, as the inbound part took up mo

I've actually tried to write an ActivityPub server in Vapor! I must admit I didn't get very far on the outbound part using Vapor, as the inbound part took up most of my time. My impression was that ActivityPub is way too poorly specified for a good ecosystem to develop, which is probably why we see a monoculture of Mastodon for post-based ActivityPub, and similar semi-independent monocultures for things like Reddit replacements (Lemmy?). You're right about the NIO part. I've had to dig into it a few times, but rarely found it productive in solving problems. Vapor is pretty flexible if you drop past it's first layer of abstractions, and as long as you pick one of futures/async and stick to it, it's fairly straightforward.