Experience tenanting a Rails app: Showcase application

[rubys]

I'm very much looking forward to multi-tenanting being built into Rails. I will be able to retire quite a bit of code. Active Record Tenanting + Beamer + Kamal Geo Proxy could be quite a game changer.

My current approach an be found here: https://github.com/rubys/showcase/blob/main/ARCHITECTURE.md#multi-tenancy ; the TL;DR version is one app per database, each running the same code base, but with a different DATABASE_URL.

The code is open source, and the app is live here: https://smooth.fly.dev/ (Fly.io) and https://showcase.party/ (Hetzner/Kamal). Blue dots on the map are sites using the software, yellow dots on the Fly.io site are servers. https://showcase.party/index is a complete list of events, each event is one database.

https://fly.io/docs/blueprints/shared-nothing/ contains more background.