Let's go back and look at the GenServer we implemented for the previous chapter:
defmodule Vocial.ChatCache do use GenServer
We started off by declaring that we wanted to use the GenServer macros as a starting point for building off our ChatCache Genserver. GenServer.start_link/0 should take in the module that is running as the server, the arguments to starting the link, and the list of options for starting the server itself. In the following case, we're going to register this running process as a name, using its module name as the name:
def start_link do GenServer.start_link(__MODULE__, [], name: __MODULE__) end
Next, we need to declare an entry point for our GenServer. This is how our Supervisor knows how to start up our ...
