ConceptDraw Solution Park

This Azure cloud architecture pattern diagram template was created on the base of figure in the article "Competing Consumers Pattern" from the Microsoft Developer Network (MSDN) website.
"Competing Consumers Pattern.
Enable multiple concurrent consumers to process messages received on the same messaging channel. This pattern enables a system to process multiple messages concurrently to optimize throughput, to improve scalability and availability, and to balance the workload. ...
An application running in the cloud may be expected to handle a large number of requests. Rather than process each request synchronously, a common technique is for the application to pass them through a messaging system to another service (a consumer service) that handles them asynchronously. This strategy helps to ensure that the business logic in the application is not blocked while the requests are being processed. ...
Use a message queue to implement the communication channel between the application and the instances of the consumer service. The application posts requests in the form of messages to the queue, and the consumer service instances receive messages from the queue and process them. This approach enables the same pool of consumer service instances to handle messages from any instance of the application." [msdn.microsoft.com/ ru-RU/ library/ dn568101.aspx]
The Azure cloud system architecture diagram template "Competing consumers pattern" for the ConceptDraw PRO diagramming and vector drawing software is included in the Azure Architecture solutin from the Computer and Networks area of ConceptDraw Solution Park.