Sidekiq 6 requires redis 4 or later. Some distros don't ship with that version so an upgrade is required.

If you're running your Ruby apps on your own server, you obviously need Ruby installed. The problem is the version of Ruby provided by the OS is commonly not what you want.

I decided to move my projects from one hosted git service to a different one and needed to make the change near seamless for contributors and production

I decided want to migrate a Rails 4.2 side project from unicorn to puma. The app has relatively high traffic throughout the day, so I want to avoid any visible downtime.