Hi Jan, On Sun, Mar 23, 2014 at 12:38 PM, Jan Vincent Liwanag <[email protected]>wrote:
> Consider an actor 'BankAccount' which receives messages: > > > - Deposit(amount, branchName, time) > - Withdraw(amount, branchName, time) > - GetBalance > > Within the actor, I only keep the balance as part of the state. The > branchName (which is the branch of the bank) and time (time when the > request was made) does not affect the actor's state since it does not > affect the balance. > > I want to save all Deposit and Withdraw transactions to a SQL database -- > the amount, branchName, time as well as whether or not the transaction was > successful or not. (Withdraw may fail if there's not enough balance.) I do > not need to save GetBalance requests. > > Every end of day, I want to save the user's balance to a different table > on the same SQL database. > > Given this, is it a proper fit for akka persistence? I'm thinking I can do > event sourcing. I will need to write a custom journal and snapshot plugin > however since I want it to write to a SQL database with a predefined > schema. The journal and snapshot plugins however are not generic -- that is, > they can only handle specific messages / state -- in this case Deposit and > Withdraw messages and balance as a state. Is this acceptable? > Yes, that would be possible. Real bank account transactions are always event sourced, in some way. Cheers, Patrik > > Jan Vincent Liwanag > > -- > >>>>>>>>>> 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. > -- 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 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.
