When you develop web applications of any kind, more than often, you will need a database to store data in. Without a proper persistence layer, only basic web apps can be built. In Chapter 5, Programming RethinkDB in Node.js, you learned how to connect to a RethinkDB cluster and run queries from a Node.js script. In this chapter, we're going to use the same syntax to use RethinkDB within an Express.js web app.
Fortunately, adding database connectivity capability to Express.js web apps is just a matter of loading an appropriate Node.js driver for the database in your app; however, you maybe wondering where exactly we put the code that interacts with the database, in the context of our Express.js web application. The answer lies within the MVC pattern.
If you've ever developed web applications before, you'll certainly be familiar with the model-view-controller pattern, which divides an application into three separate components: the model that stores...
