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Azure Service Bus Premium - Better latency and throughput with predictability

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A few days ago the public preview of Azure Service Bus Premium was announced. The first two things that people usually check at a new service like this is price and the added value. In this post we will talk about them.

Added Value
The biggest things between the standard offer and Premium is the dedicated VMs that are reserved only for the end customer. Each VM that is used by Azure Service Bus Premium is isolated from the rest of the customers and will be used only by him.
This means that the performance of the Azure Service Bus will be predictable. This is a very important quality attribute, especially when you need to know exactly how long it takes for a message to arrive at final destination, when latency and throughput needs to be predicted.
When you decide to use the Premium offer, the storage engine that will used behind the scene will not be the standard one, used by Service Bus, but the new one, used by Azure Event Hub - so called Jet Stream.
In this way, we can have dedicated resources (Message Unit) for our namespaces.

Capacity
The capacity of this system is called Message Unit (MU). This capacity unit is dedicated for each namespace that you creates. This means that you can have multiple Service Bus Topics under the same Message Unit. When you need better performance, you can create dedicated Premium namespaces, for each resource (Topic).
The Message Units for each namespace can vary from 1 to 4. Each MU will offer us an isolated "VM", with dedicated resources.

Price
In this moment, in preview mode, the price of Azure Service Bus Premium is 9.368€ per day for each Message Unit (current price is valid only for preview).

Let's see what we can with it (smile).
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