I'm been playing with the new Akka persistence module, and have the following questions that I hope to get answered.
1. The document says "If a processor emits more than one outbound message per inbound Persistent message it *must* use a separate channel for each outbound message to ensure that confirmations are uniquely identifiable..." Is this because that " p.withPayload(...) and Persistent(...) method reuse the current message's id, therefore if we call either method more than once, the processor will emit multiple messages with the same id? I think this implies channels compare new message'd id with the largest id ever seen and discard messages whose ids are smaller or equal to the last id seen, do they？(I guess I should start reading the code.) 2. Were channels designed to be used one-way or two-ways? If my previous guess about channel's id check mechanism is correct, channels should be one-way only. Just want to make sure I'v got it right. 3. If one processor accepts persistence messages from multiple channels, to deal with potential re-deliverying of the same messages, I guess the processor should keep a 'last-seen-id' for each channel and do id-check, right? 4. In a hello-persistence example I'm writing, I used a Casbah mongodb journal plugin (the author is nice btw), I randomly get "Persistent commands not supported" error. Anyone knows what this imply, application logic error or it might be a journal plugin incomparability? 5. Is there a way to customize message id generation logic? Say I want my id start from 1000000 and increment by rand()%3? Thank you :) -- >>>>>>>>>> Read the docs: http://akka.io/docs/ >>>>>>>>>> Check the FAQ: http://akka.io/faq/ >>>>>>>>>> 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/groups/opt_out.
