Proper use of Task.async?

[peerreynders]

Caveat:
Compatibility with OTP behaviours

It is not recommended to await a long-running task inside an OTP behaviour such as GenServer. Instead, you should match on the message coming from a task inside your GenServer.handle_info/2 callback.

If you need to go that route have a look at:

Saša Jurić's "Beyond Task.Async" blog

I am trying to follow this blog Beyond Task.Async. So far I have got the following code working: defmodule Aggregator do @moduledoc """ Testing async tasks """ def new, do: 0 def aggregate(result), do: result def aggregate(aggregator, result) do Process.sleep(500) aggregator + result end end defmodule Calc do @moduledoc """ Testing async tasks """ @spec run(Integer.t) :: Integer.t def run(id) when id > 0 do IO.puts "\n\n sleeping: #{id}" Process.sleep…