All of us want to visit a fast loading website. No one wants to wait for a slower website to load.  In the effort to speed up our website that is running Ruby on Rails, we decide to use the first-party analytics for Rails: ahoy_matey gem.  This article shows how to speed up showing the visitor/event counts of ahoy gem from 13 sec to 0.01 sec, more than 1,000 times faster!      Why we choose ahoy gem   It claims to be first-party analytics for Rails We'll have the server's side control. Any third-party analytics won't let us have this. It supports Rails 6 and its webpacker. It allows us to specify which pages on our Rails website to track. And the last one is it works with AMP.   However, the journey with ahoy_matey isn't a smooth one. Contrary to our belief, we notice the pages with ahoy_matey are much slower than those without it.  Something is wrong there.    InvestigationWe start our journey to investigate this problem. We begin with a page that's showing a list of articles. Every article there has a…