Advanced multi-db techniques in Rails 6

Rails 6 is just around the corner. The release candidate two was recently released. This post is part of the Road to Rails 6 series which will prepare you for Rails 6.Check the part one of this post where we saw how to setup an app with multiple databases in Rails 6 and deploy it to Heroku.In this post, we will not discuss about multiple databases but we will discuss about read and write instances of same database and how to manage them within a Rails application.