Now, we can look at one of the fastest growing trends in web development, the concept of single-page applications. The name is fancier than the practice because it is wrapped in confusion, but we will help you get over that here.

First, think of your website as a computer or mobile device. You can put multiple applications on your system. The apps can work together or independently. While we understand this for our computing systems, we seem to get confused when we move to web servers. Everything is not one application, or better put, rarely should everything be one application. There was a day, before Windows, when your spreadsheet and your word processor were shipped as one application. This was very popular, but over time we figured out packaging two apps was smarter than trying to build cross functionality into one app. Thus, we created office suites.

Today, we are suffering from the effects of mistakes made on most server platforms. When our backend server languages...