A Visual Guide to Using :includes in Rails

If you’re new to developing Rails applications, you’ve probably come across the term N 1 queries. You probably also know that this is something you want to avoid.As an engineer who joined Gusto straight out of undergrad with no Rails or full-time industry experience, I was initially overwhelmed by this concept. But, when broken down into bite size chunks, the solution to fixing N 1 queries is actually quite simple.