Dear Akka users I am currently adding Akka persistence to an existing (java) Akka application, and have some questions. The example in the documentation seems too simple for me, and I wonder if there are any examples of bigger application, with more complicated actors, out there. Any best practices (with examples bigger than a counter)? Any patterns you have used with success?
Some questions: * How do you achieve separation of concerns in an UntypedPersistentActor? It seems to me that the business-logic will be heavily mixed with logic to determine if the the message received should be persisted or not. I am searching for a way to separate business-logic from the persistence-part... * How do you reuse procedures (with getContext().become(...)) between onReceiveRecover and onReceiveCommand? I could call recoveryRunning() every time I need to do something different, but especially with persist(...), it just makes for a lot of code... * We are trying one approach, in which we encapsulates all actor-state in an object which handles all the persistent bits, but (again) the code base grows enormously. Anyone else tried this? * I could receive commands, and for all state-changes create a new event, which is persisted (and then calls the same method as onRecieveRecover). That seems (again) as a lot of extra code. I do realize that this might be how it has to be, as Event Sourcing is complex. Do you have any patterns for separating the persistence logic from the business logic? Or are they really in-separable by nature? I hope this question is not too general. Kind regards, Anders Båtstrand Oslo, Norway -- >>>>>>>>>> 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.
