How does Windows Azure Service Bus Queues Duplicate Detection work?
I know that you can set duplicate detection to work over a time period with an azure service bus queue. However, does anyone know whether this works based on the objects in the queue?
So if I have an object with an id of "SO_1" which gets put on the queue and is subsequently consumed, is the duplicate detection still valid?
What I think I'm asking is - is it the timeframe and the object, or just the timeframe that make the queue decide what is a duplicate?
Answer
http://blog.iquestgroup.com/en/windows-azure-service-bus-duplicate-detection/#.UaiXrd7frIU
When we activate duplication, the Windows Azure Service Bus will start to store a history of our messages. This period of time can be configured to range from only a few minutes to days. If a duplicate message is sent to the Service Bus, the service will automatically ignore the message.