These are chat archives for RBMHTechnology/eventuate

11th
Jan 2016
Martin Krasser
@krasserm
Jan 11 2016 13:09
I'm pleased to announce that the latest eventuate-0.5-SNAPSHOT now passes all chaos test scenarios of the eventuate-chaos project. For a high-level description, see for example the operation-based Counter CRDT test scenario which was also executed with a Cassandra storage backend. Chaos was generated by randomly injecting network partitions between Eventuate locations, within the Cassandra cluster and between Eventuate locations and the Cassandra cluster nodes. Furthermore, network packets have been dropped randomly too. In all tests, replicated state has been updated concurrently at rates between 10 - 100 events per second per location. This was a reasonable update rate given the high frequency of network partitions and network packet loss. After a final annealing phase, replicated state successfully converged at all locations, even after long-running chaos tests (approx. 1 hour). A single missing event or a duplicate would have broken convergence and let the chaos tests fail. The failure handling consequences learned during the chaos tests are now summarized in the failure handling section of the reference documentation. We will later provide a more detailed chaos test report in a separate blog post.
Juan José Vázquez
@juanjovazquez
Jan 11 2016 18:12
Hi @krasserm, sorry if this turns out to be off-topic but I'm currently reading the excellent book Functional and Reactive Domain Modeling by Debasish Ghosh and I can't avoid to wonder if you find synergies between his architectural propossal (strongly based on functional patterns) and Eventuate. Have you had the opportunity to read this book?. Do you find it interesting or useful to consider in regards to your project?.