yes, I have refactored system as using cluster sharding now, just curious about if we can implement state migration with consistent hashing
Best, -- Nan Zhu http://codingcat.me On Saturday, November 22, 2014 at 11:19 AM, Patrik Nordwall wrote: > Hi Nan, > > On Fri, Nov 21, 2014 at 1:53 PM, Nan Zhu <[email protected] > (mailto:[email protected])> wrote: > > the only way is to replicate what cluster -sharding does? > > > > use a singleton instance to maintain everything? (but that is contrast with > > the discipline of DHT which is essentially a de-centralized design?) > > > > Best, > > > > Nan > > > > > > On Friday, November 21, 2014 7:10:42 AM UTC-5, Nan Zhu wrote: > > > Hi, all > > > > > > I have a question about consistent hashing routing in akka > > > > > > in my system, all actors are stateful, specifically: > > > > > > all the actor maintains one or more lists as their state, the message is > > > indexed by a key. The router then forward the message according to the > > > key to one of the actors which in turn save the message to the > > > corresponding list (i.e. the list is bind with a key)... > > > > > > when a new node is added to the cluster, the router will update the hash > > > function, and the future messages with the keys falling in the certain > > > range will be forwarded to this new node.... > > > > > > The problem, I also need to query the saved message...according to my > > > understanding on the Akka implementation, the messages saved in the old > > > routee will not be automatically migrated to the new joined one, so my > > > query will only get partial result > > > > > > is that true? if yes, how to implement this function? > > > > > > it seems that cluster-sharding can do this naturally, but just curious > > > about if we can do with consistent hashing schema > > Wouldn't cluster sharding be used instead of a consistent hashing router? > I'm not sure I understand your question. > > Regards, > Patrik > > > > > > > > Thanks > > > > > > Nan > > > > -- > > >>>>>>>>>> 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] > > (mailto:[email protected]). > > To post to this group, send email to [email protected] > > (mailto:[email protected]). > > Visit this group at http://groups.google.com/group/akka-user. > > For more options, visit https://groups.google.com/d/optout. > > > > -- > Patrik Nordwall > Typesafe (http://typesafe.com/) - Reactive apps on the JVM > Twitter: @patriknw > > > > > > > -- > >>>>>>>>>> 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 a topic in the Google > Groups "Akka User List" group. > To unsubscribe from this topic, visit > https://groups.google.com/d/topic/akka-user/a7mw5bCUh8E/unsubscribe. > To unsubscribe from this group and all its topics, send an email to > [email protected] > (mailto:[email protected]). > To post to this group, send email to [email protected] > (mailto:[email protected]). > Visit this group at http://groups.google.com/group/akka-user. > For more options, visit https://groups.google.com/d/optout. -- >>>>>>>>>> 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.
