Feedback on my article about how to safely consume RabbitMQ messages with Broadway

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I’ve only read articles about Broadway, never used it in production, so I can’t speak to the specific functionality here. Some more general code notes:

def handle_message(_, %Message{data: string_payload} = message, _) do
  apply(unquote(module), :handle_message, [string_payload])
  message
  # I rescue any crash and move the message to the other queue
rescue
  e ->

Beware: there are more ways to crash than rescue deals with: see GenServer timeout and retry for recent discussion

exchange_fct = Keyword.get(opts, :exchange)
exchange = exchange_fct.()

This pattern happens often enough that it feels like it should be named.