Multi-Tenant Rails: Everybody Gets a Database!
Mike Dalessio • Amsterdam, Netherlands • Talk

Date: September 04, 2025
Published: not published
Announced: May 20, 2025

As Rails’s SQLite support has improved, it's finally possible to have truly multi-tenant Rails applications - isolated data for each account! - without sacrificing performance or ease of use. This talk describes a novel, production-vetted approach to isolating tenant data everywhere in Rails: the database, fragment caches, background jobs, Active Storage, Turbo Stream broadcasts, Action Mailer, and even the testing framework.

You’ll learn how to build a new multi-tenant app or migrate an existing one. You'll learn the technical details of how Rails can support multiple tenants and strict data isolation. You'll see a live demonstration of a multi-tenant app. And you'll learn why a deployment topology like this might make sense for you, and how it scales up and out.

Rails World 2025