You work on a mature web application that cleanly separates backend and frontend. The server-side code, written in Ruby, is mostly responsible for translating HTTP requests into SQL statements (with the help of an ORM) through rich and well-documented API. You choose GraphQL over REST to streamline your endpoints, but your database is not happy with all the extra queries. After much searching, you find an exhaustive hands-on guide on fighting N+1 from a fellow GraphQL-ing Rubyist at Evil Martians… Here it comes!