they recognize it. It's in the article, even. Whether they have to act on it? Maybe not. Almost all of Rails codebases that I worked on, had performance probl

they recognize it. It's in the article, even. Whether they have to act on it? Maybe not. Almost all of Rails codebases that I worked on, had performance problems (in that it was hurting the bottom line). But most often, the solution was found elsewhere: tune the database, use AR smarter, spin up more servers, buy a bigger database server, etc.