Artem Bilan added a comment - 21/Jun/13 1:31 AM Hey there! Let me express my view. It may look like: < idempotent -filter id = "fooIdempotent" input-channel = "in" output-channel = "out" disracd-channel = "duplicate" message-store = "messageStore" expression = "payload.id + '|' + payload.date" /> where: id - is involved in 'messageGroupId' as it is in the <delayer> message-store - store messages in the group to identify duplicates in the future expression - the idempotent key It should be covered by MessageGroup , because I may have several similar filters in the application. We can use expression evaluation result 'idempotent key' as message id for store, or iterate over entire group and compare results for each message. I don't know... May be we can follow with Cammel expirience too ( http://camel.apache.org/idempotent-consumer.html ) and add other usefull options. Of course, the case "Make balance $110" is not considered: it's fully up to the business logic of concrete application. Cheers

Gary Russell added a comment - 24/Oct/14 1:24 PM Merged