Now that we’ve laid some foundation for the app and reviewed some of the programming languages we’ll be using to build it, you can start getting familiar with the new technologies that will come into play.

First, let’s get acquainted with Pusher, which will be responsible for the realtime interaction on our site. In this chapter, we’ll explore the origins of Pusher, the underlying technology, some of the tools they provide to help development, and get our hands dirty by building a simple realtime activity tracking app.

A Brief History of Pusher

Pusher is part of a relatively new trend on the Internet known as software as a service ...

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