I have an Elixir apps which does some harder jobs in the background. I am using Oban to run them asynchrously. For better availability I’d like to spawn a second server instance of my Elixir app (I am using fly.io) but without spawing another Oban app there.

Currently Oban is just part of the Standard Application Supervision Tree:

def start(_type, _args) do
    children = [
      # Start the Ecto repository
      MyApp.Repo,
      MyAppWeb.Telemetry,
      {Phoenix.PubSub, name: MyApp.PubSub},
      MyAppWeb.Endpoint,
      {Oban, Application.fetch_env!(:my_app, Oban)}
    ]

    opts = [strategy: :one_for_one, name: MyApp.Supervisor]
    Supervisor.start_link(children, opts)
  end

Any idea how to do it?