How to find a memory bloat in your Rails app before it happens | dmitrytsepelev.dev

Memory bloat in Ruby happens when someone loads a lot of data to the memory. Ruby Virtual Machine does not return most of the allocated memory to the operating system even after data is collected as a garbage. It’s not a big deal for local development or console programs, but if you have a bloat in the big Rails app it might cost you a lot of money.It is quite easy to find a fix memory bloat when it happens (you have a monitoring tool set up, right?), but can we prevent it? In this article I will present a new approach for that, using a new gem io_monitor as a reference implementation.