If you are like many (most?) of us, you have encountered Rails
Credentials/Secrets and secret_key_base and may have been
left a bit (or more) confused.
This post is an attempt to remove some of that confusion by
(by @andrestaltz)
If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.