SendAsync

[pmcvay]

(I apologize for this question as I am a beginner to scala)

Is there an example anywhere on how to use sendAsync?

I am trying to do the following: if sCol is a collection on strings Then I would like to do sCol.map(producer.sendAsync(_)) wait until all complete

[pmcvay]

Or does the default send use batching without waiting?

[pmcvay]

If I just do sCol.map(producer.send(_)), then it is terribly slow so I do not think the messages are being batched

[sksamuel]

Your last example will send one at a time. You can sendAsync then collect all the futures using .sequence and then await on that.