The hidden cost of the invisible queries in Rails

Ruby on Rails is awesome, it is really awesome. It allows us to create web applications without knowing every involved technology. After all, Rails is optimized for programmers happiness and it does a terrific job.One of those technologies where Rails is really helpful is SQL. It removes the complexity of creating manual SQL queries using ActiveRecord. However, it is not only for our own good. Today we will see some of the drawbacks and how they affect the Rails application development.