If I were you, I'd use parallelism 1, and if that ever became a problem, I'd revisit that choice.
Focus on the business value and tune when you have something which works :) On Wed, Feb 17, 2016 at 11:49 AM, Alexey Shuksto <[email protected]> wrote: > Hello there, > > I have `Source[Future[T]]` which I need to transform to `Source[T]` > somehow. > > Obvious choice would be to use `FlowOps.mapAsync(parallelism)(...)` but > the problem is -- I'm not quite sure how to determine 'right' `parallelism` > value -- basically I need mapAsync to produce as many futures, as requested > by downstream. > > Recently I found `FlowOps.flatMapConcat(...)` method, and something along > the `Flow[Future[T]].flatMapConcat(f => Source.fromFuture(f))` looks very > similar to mapAsync but without parallelism guessing. > > Could anyone tell me is there any significant differences between them? > > -- > >>>>>>>>>> Read the docs: http://akka.io/docs/ > >>>>>>>>>> Check the FAQ: > http://doc.akka.io/docs/akka/current/additional/faq.html > >>>>>>>>>> Search the archives: https://groups.google.com/group/akka-user > --- > You received this message because you are subscribed to the Google Groups > "Akka User List" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > Visit this group at https://groups.google.com/group/akka-user. > For more options, visit https://groups.google.com/d/optout. > -- Cheers, √ -- >>>>>>>>>> Read the docs: http://akka.io/docs/ >>>>>>>>>> Check the FAQ: >>>>>>>>>> http://doc.akka.io/docs/akka/current/additional/faq.html >>>>>>>>>> Search the archives: https://groups.google.com/group/akka-user --- You received this message because you are subscribed to the Google Groups "Akka User List" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/akka-user. For more options, visit https://groups.google.com/d/optout.
