Intro to Function Plugs - ElixirCasts

If you’re building a web application in Elixir you’re using Plug. According to the docs, Plug is a specification for composable modules between web applications. At the heart of Plug is the connection, which is represented by the Plug.Conn struct, this contains all the data for a given request. A plug simply takes a connection struct, and returns a connection struct. This allow us to take our conn