RailsConf 2025 An ActiveRecord Rewrite: the Story Behind the Attributes API by Tess Griffin

In this talk, we'll dig deep into the design decisions of the Attributes API. We'll talk to its author and hear their experience from "I think this would help with the current project I'm on!" to "Oh no, I'm refactoring all of ActiveRecord!". This will be a peek under the hood to a foundational part of ActiveRecord. You'll learn about the difficult technical constraints and tradeoffs that were made in development. Even if you don't know anything about the Attributes API, if you've used ActiveRecord, you've used it! No prior knowledge needed.