Re: [akka-user] Event Sourcing with eventual consistency guarantees

2014-12-26 Thread Stefan Schmidt
Hi Konrad, Merry Christmas to you too! Thanks for your suggestions. As it happens I have read / watched many of the materials you mentioned after reading through this thread https://groups.google.com/forum/#!topic/akka-user/BRh3YNjP0kY. The link to the saga chapter is quite useful though.

Re: [akka-user] Event Sourcing with eventual consistency guarantees

2014-12-25 Thread Konrad 'ktoso' Malawski
Hit command-enter too soon by accident before finishing my email - sorry! Here’s the rest. To read: And also Pet Helland’s (at that time at Amazon) legendary "Life Beyond Distributed Transactions” In general though. What you described as a transaction is in fact a series of events _plus_ a so

Re: [akka-user] Event Sourcing with eventual consistency guarantees

2014-12-25 Thread Konrad 'ktoso' Malawski
Hi Stefan, Systems like you describe definitely *are* implemented in terms of persisting events. I would highly recommend these following videos / papers as a "holiday-read”: * Eric Evans (Dad of DDD) about modeling to such constraints WITH thinking of time and WITHOUT transactions http://www.us

[akka-user] Event Sourcing with eventual consistency guarantees

2014-12-25 Thread Stefan Schmidt
Hi guys, I am currently prototyping a new app which involves transferring money between various accounts. On a very high level I have a system account (which is used to collect fees), one account for each member in the platform (many of them), and group accounts. Money needs to be moved on a f