Hi Hagard: That looks like a convenient syntax that does the same thing as a persistent view does, tailored for users of scalaz streams, or am I missing something?
Can you take multiple eventlogs and combine them into one reproducible ordered stream. So that if you make decisions (validate preconditions against that read model) based on that stream, can you guarantee that the next replay up would recreate the same results? I think that is where it becomes very tricky. /Magnus Den tisdag 14 juli 2015 kl. 13:51:25 UTC+2 skrev haghard: > > > Hi, > > Please take a look at https://github.com/krasserm/streamz > You can read concrete journal with ```replay("processorA")``` and write in > anywhere manually without interaction with PersistentView > > Hope it helps > > вторник, 14 июля 2015 г., 10:20:29 UTC+3 пользователь Amiri Barksdale > написал: >> >> I've been reading up here on PersistentActor, and I think I get how that >> works to perform commands and write the result to an event store. I also >> think I understand that PersistentViews can subscribe to a PersistentActor >> and receive notification of each event stored for that PersistentActor >> type. I want to take a PersistentView and use it to update a separate Read >> datastore. >> >> I don't want to treat the PersistentView itself as a read store, but I >> want to make it trigger the creation or updating or saving of a >> "projection" of the event in some other store, like, e.g., Elasticsearch or >> Postgresql. Are there any guidelines, best practices, or examples of how to >> do this? >> >> One thread ( >> https://groups.google.com/forum/#!searchin/akka-user/persistentview/akka-user/rMHjwBZpocQ/SmfAGMg7G68J) >> >> from June 2014 seemed to indicate that this sort of writing to another >> store would require PersistentViews to be able to read from multiple >> PersistentActors for this to be feasible. Is this still true? >> >> What is the path to take here, to get the actor system populating my read >> stores? Are people instead creating projections directly from the event >> store itself, like Greg Young's EventStore allows? >> >> Any insight is welcome! >> >> Amiri >> > -- >>>>>>>>>> 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 http://groups.google.com/group/akka-user. For more options, visit https://groups.google.com/d/optout.
