Shower is a gem for Ruby on Rails 4 that simplifies message streaming, the ability to push data to the front end in real time. ActionController::Live is a new feature in Rails 4 that allows for message streaming. Essentially, a user opens a persistent connection to a Live controller and messages are pushed through the connection. While instant messaging seems to be the standard ‘Hello World’ introduction to streaming, there are many more uses. For example, inventory notifications for an online store, stock prices, breaking news, maintenance alerts, etc. As message streaming finds more uses, more and more clients will expect to…