I’ve heard that question a number of times during my projects and consultings I did for several customers. Normally that generic answers can only be properly answered with information about the non-functional requirements and Service Level Agreements a certain project has to fulfill. Without knowing about your specific situation it is generally difficult to give hard numbers about the performance you can expect with a single NServiceBus endpoint. But what exactly can influence the speed...
What factors affect the speed of NServiceBus message processing?
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