I have a system that seems to be working fine, but when a certain process writes a message, I get 10 messages appear in the queue. They are all almost duplicates, but the last section of the message id is incremented.
Example:
c6743810-65e6-4bcd-b575-08174f9cae73:1:1:1
c6743810-65e6-4bcd-b575-08174f9cae73:1:1:2
c6743810-65e6-4bcd-b575-08174f9cae73:1:1:3
c6743810-65e6-4bcd-b575-08174f9cae73:1:1:4
.
.
.
What does this mean? From what I can tell, the process is only writing one message.
Nevermind, I found it... The process WAS writing multiple messages, but using the same producer and transaction. ActiveMQ seems to use this as a session ID or something of that sort. Feel free to expand on this topic if you deem it necessary.
The message id is generated to be globally unique - and consists of a combination of a your host, a unique MessageProducer Id and an incrementing sequence for each message
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