Until recently, Ruby lacked a mechanism for detecting native-level memory leaks from within Ruby and native gems. This meant that it was hard to analyze Ruby applications that suffered from memory leaks, causing them to consume increasing amounts of memory until the system runs out and terminates the application. In this blog post, we’ll be looking at the RUBY_FREE_AT_EXIT feature, which allows memory leak checkers to find memory leaks in Ruby and in native gems.
