This is a tutorial for creating a plugin with Cinch, in multiple parts. It will take you through the basics of working with Cinch, creating a plugin and turning it into a gem. Plus, it will give you a highly addictive word game at the end.
TL;DR
If you use sferik's Twitter gem with multiple accounts in a rails app, or a ruby app that uses concurrency in some way, then you need to be using the thread safe configuration.
The other day, one of my colleagues said something that grabbed my attention, while working on one of our biggest rails apps.
If you're a ruby developer, plugging a gem into a project is second nature. Most projects now use bundler to manage gem dependencies and versions, as it is so effective at doing so. If you've been doing this for long enough, then you will have come across the pessimistic version constraint operator, at least unknowingly.
I ran into an issue the other day that was exacerbated by the fact that blog posts on the subject seemed to be out of date. Therefore, this is an attempt to bring a more up-to-date solution.