In this chapter, you learned how to work with Akka actors and created a web chat using Akka, the Play framework, and WebSockets. Akka is a really powerful solution that can be used with or without the Play framework. Additionally, you learned about the Actor model, mailboxes, routing, persistence, Akka configuration, message patterns, and how to write code with actors in Scala and Play.
In the next chapter, you will learn more about REST, JSON, and how to model a REST API, as well as how to create a Scala client for your REST services.