Hello,
We are having a requirement that if a consumer is slower than producer then
discard all the elements that cannot be consumed and whenever the consumer
gets ready, feed the latest element from producer.
We tried an approach as follows:
Source.actorRef(0, OverflowStrategy.dropHead) // actor receives data
> at every 10 milliseconds
.runWith {
> println("data received")
> Thread.sleep(1000) // mimic consumer processing data in
> every 1 second
> }
We shrank the buffer size to 1 (minimal possible) with following settings
private val actorMaterializerSettings = ActorMaterializerSettings(
> actorSystem).withInputBuffer(1, 1)
With this buffer size, Sink pulls data 1 to consume and data 2 to put in
buffer at initialization.
While data 1 is getting processed we are dropping data from producer.
When data 1 gets processed after 1000 milliseconds (1 second) ideally I
should receive data 10 (and drop 2 - 9 as consumer is slow) but instead I
receive data 2 from the buffer. data 2 in our domain is extremely useless
as it is stale.
Is there a way to disable buffer at Sink totally and always pull latest
data from Source ?
--
>>>>>>>>>> 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 akka-user+unsubscr...@googlegroups.com.
To post to this group, send email to akka-user@googlegroups.com.
Visit this group at https://groups.google.com/group/akka-user.
For more options, visit https://groups.google.com/d/optout.
