defmodule MyApplication.Recurring do
  use GenServer

  def start_link() do
    GenServer.start_link(__MODULE__, :ok, name: __MODULE__)
  end

  def init(:ok) do
    schedule()
    {:ok, %{}}
  end

  defp schedule do
    Process.send_after(self(), :do_work, 15 * 1000)
  end

  def handle_info(:do_work, state) do
    IO.puts "My recurring task!!"

    schedule()

    {:noreply, state}
  end
end