RailsConf 2022 - `rails c` with meturbocharge your use of the interactive console by Sweta Sanghavi - YouTube

Spinning up the rails console can be a quick way to answer a question with a back of the envelope calculation. But, what else can we use it for, and how does it work? Allow me to show you new ways to leverage the console's features and become an even more expert debugger. You'll leave with some simple tactics to save you time and write more performant code. While you're here, we'll look under the hood to see how the features of the console are encoded and we'll trace back the history of these libraries to see how they arrived in our Rails application.