The Bug That Made Me Fall Back in Love With rack.response_finished
ruby
dev.to
There is a particular kind of production bug that doesn't feel like a bug. It feels like weather. Every few days something leaks, a worker gets cranky, p99 creeps up during a traffic spike, and you shrug and restart it because it clears up on its own. For the better part of a year that was my relationship with rack.response_finished - except I didn't know that was the name of my problem yet. I just knew our Rails app was quietly bleeding resources and I kept blaming the wrong things. This is th