I'm not sure the way my understanding of Convoy is correct:
- Convoy is about processing several message in batchs(sequential or concurrent), those messages all contribute to a certain action
- and using correlation to define groups of batch –correlation is the unique property to identify a message or a batch of messages
But in my case, i cannot find a unique property for every file, becasue a single file can be sent twice, e.g., there may two files containing the same PO number, just because we need to do another data extract to update
And a single file will trigger the orchestration instance, it doesn't need to waiting for any other files to continue. The samples i found in MSDN are not my case…..mine seems simpler, but i have no idea how to using convoy to make the orchestration become singleton…
Can anyone clarify Convoy or Singleton Pattern clearer?
Many Thanks