Why do I need to know about threads? My main purpose to discuss threads is not for the audience to start writing multithreaded code but to have a good idea of what is happening to their application when they are using multithreaded gems in their codebase.

Nowadays a good number of us are using Sidekiq for background processing or Puma as an efficient web server and I’m sure there will be more of such gems soon enough so I believe this makes it essential for us to know how our applications behave when we use such gems and how we can get the most out of them. Learn More About Threads in Ruby..