Comment by iainmerrick

Yes, Magic Containers is excellent. I don't know if it scales up to huge loads well -- that might be expensive -- but it scales down really well. For a very lightly loaded hobby project it's almost free.

A few people here are complaining about the lack of a free tier, but Magic Containers can cover a lot of the same ground as Cloudflare's Durable Objects, which IIRC cost a minimum of $5/month.