How to Find, Debug and Fix N+1 Queries in Rails

This article provides practical guidance on finding, debugging, and fixing N+1 query issues in Ruby on Rails applications. It emphasizes that fixing N+1 issues is a key optimization for Rails performance, but incorrect eager loading can worsen response times. The author recommends simulating production-like data locally using FactoryBot to make N+1 issues detectable during development. For debugging, the article suggests using rack-mini-profiler over the bullet gem due to noise and false positives, showing how to view SQL query counts per request and trace queries to specific lines of code. The content is focused on software development and performance optimization within the Rails ecosystem.