How to scale Ruby on Rails with Redis

Ruby on Rails is a useful framework for quickly building line-of-business applications. But as our applications grow, we face scaling challenges. There are a variety of tools we can use—but adding different technologies to our applications increases complexity. This article explores how to use the Redis in-memory data structure store as a multi-purpose tool to solve different problems.First, we need to install Redis, which can be done with brew, apt-get, or docker. And, of course, we need to have Ruby on Rails. As an example, we will build an online event-management application. Here are the basic models.