Got it. Thanks Konrad. :-) - Lap
On Tuesday, October 13, 2015 at 9:29:32 PM UTC+8, Konrad Malawski wrote: > > > 1. Not generate elements > 2. > - I don't think its possible for incoming connections if I am > correct? > > You *kind of* can... > > If your connection accepting flow is very slow, we won't accept the > connections inside Akka IO. > > However the Kernel (i.e. Linux) will finish the TCP handshake in any case > and it has also a backlog setting, > > so the Kernel has a backlog of connections it will accept before handed > over to the JVM in any case. > > In general there's a setting `backlog` on Akka HTTP, that's propagated to > Akka TCP, that's propagated to Akka IO, that's propagated to JDK's > ServerSocketChannel, that propagates to the kernel... > > It's a long story as you see, and in the JDK and kernel it's > implementation dependent how it will deal with this in any case: > http://docs.oracle.com/javase/7/docs/api/java/nio/channels/ServerSocketChannel.html#bind > > > > 1. Try buffering the elements in a bounded manner > 2. > - What happens when the buffering overflows? > > Well, if you buffer *unbounded* you'll blow up with out of memory errors. > > That's why Akka Streams always use bounded buffers :-) > > > > 1. Drop elements > 2. > - Does this mean it will drop the incoming connection and the user > will get a 504? > > Dropping is a very bad idea. Instead you should .cancel() the connection. > > If you just drop the idle timeout will reap the connection after some time > of inactivity. > > > > 1. Tear down the stream > 2. > - Does this mean the front-end node that is accepting incoming > connections has basically crashed and would need to be restarted? > > Yeah, that'd close the server. > > > In general though accepting the connections will not be that slow that > you'll need to worry about this :-) > > -- > > Konrad > > Akka @ Typesafe > -- >>>>>>>>>> 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 http://groups.google.com/group/akka-user. For more options, visit https://groups.google.com/d/optout.
