Interesting details from @aral on how expensive and computationally intense Mastodon can be.
https://ar.al/2022/11/09/is-the-fediverse-about-to-get-fryed-or-why-every-toot-is-also-a-potential-denial-of-service-attack/
At the time, he had 22k followers. Every post he made, and each reply, kicks off ~3k Sidekiq jobs.
He's on a totally self-hosted server with just him. A €20/month plan won't cut it, nor will a €50/month plan.
Pricey pricey.