Whether you are building a Robot, controlling a Radar, or creating a Web App, the Ruby Garbage Collector (GC) can help you. The stats exposed by the Garbage Collector since Ruby v2.1 caught my attention and pushed me to dig deeper. Both Ruby 2.1 and 2.2 brought great performance improvements. From a practical point of view, we will discuss how to use the GC to enhance significantly the performance of your software, from configuration parameters to different approaches on how you can change them yourself.