Intro to Thread-Safety in Ruby on Rails

Ensuring thread safety is critical if you want to build a performant Rails app. Unfortunately, threading-related bugs are often sneaky and only manifest in highly concurrent production environments. In this blog post, we’ll discuss code examples that are not thread-safe. I’ll also describe a toolkit for debugging and discuss possible solutions. Developing an eye for spotting these errors before shipping to production can save you a lot of headaches.