Adding support for cross-cluster associations to Rails 7 | The GitHub Blog

Ever since we made the leap at GitHub to upgrade off our fork of Rails and worked hard to stay up to date with the latest releases, we’ve consistently looked for ways to improve the Rails framework upstream. We do this in many ways – running GitHub off of Rails main, reporting and fixing bugs we find, and most importantly pushing functionality upstream that the entire Ruby community can benefit from.Most recently, we extracted internal functionality to disable joining queries when an association crossed multiple databases. Prior to our work in this area, Rails had no support for handling associations that spanned across clusters.