This chapter covered some of the fundamentals that nearly every web application requires. We learned how to interact with the session, as well as some basic session setup. We also learned how to read, write, and delete cookies, and how to create access rules to restrict access to routes. And with that, the functionality of our hipstr application is complete. In the next chapter, we'll learn how to manage configuration files, as well as how to deploy our application in a few standard ways.