Book Image

Phoenix Web Development

By : Brandon Richey
Book Image

Phoenix Web Development

By: Brandon Richey

Overview of this book

Phoenix is a modern web development framework that is used to build API’s and web applications. It is built on Elixir and runs on Erlang VM which makes it much faster than other options. With Elixir and Phoenix, you build your application the right way, ready to scale and ready for the increasing demands of real-time web applications. This book covers the basics of the Phoenix web framework, showing you how to build a community voting application, and is divided into three parts. In the first part, you will be introduced to Phoenix and Elixir and understand the core terminologies that are used to describe them. You will also learn to build controller pages, store and retrieve data, add users to your app pages and protect your database. In the second section you will be able to reinforce your knowledge of architecting real time applications in phoenix and not only debug these applications but also diagnose issues in them. In the third and final section you will have the complete understanding of deploying and running the phoenix application and should be comfortable to make your first application release By the end of this book, you'll have a strong grasp of all of the core fundamentals of the Phoenix framework, and will have built a full production-ready web application from scratch.
Table of Contents (14 chapters)
4
Introducing User Accounts and Sessions

Utilizing Presence and ETS to make our app more robust

As we start scaling our application, we'll very quickly find that in Phoenix applications, the bottleneck moves away from what our connections are doing and how long they're sitting around for and moves toward the database. In addition, the concept of determining the state of connections (when they are established, how long they've been active, what their current state is, and so on) becomes a more important question to answer. The good news is that Elixir and Phoenix both have built-in tools that you get for free that allow you to solve these problems!

Elixir provides access to ETS through the :ets namespace. This allows you to create tables, insert/retrieve/delete data, and so on. ETS specifically stores any information you enter into it in memory, which means any access to it is incredibly fast!

In addition...