You are designing a Windows Azure application that will process images.  The maximum size of an image is 10 MB.  
The application includes a web role that allows users to upload images and a worker role with multiple instances that processes the images.  
The web role communicates with the worker role by using a Windows Azure Queue. 
You need to recommend an approach for storing images that minimizes storage transactions. 
What should you recommend？ （）

You are designing a Windows Azure application. 
The application includes two web roles and three instances of a worker role. 
The web roles will send requests to the worker role through one or more Windows Azure Queues. You have the following requirements：  
- Ensure that each request is processed exactly one time.  
- Minimize the idle time of each worker role instance. - Maximize the reliability of request processing.  
You need to recommend a queue design for sending requests to the worker role. 
What should you recommend？（）