问题
Suppose I have several role instances and one instance writes to Azure Storage (blob, tables or queue - whatever). How fast will other instances be able to see and read those changes?
回答1:
There is no propagation of data from Azure Storage to Role Instances. When you request or persist data from storage you're making an OData request over the network in the background to the Azure Storage services.
Because the data is stored in a central location there is only one authority for the information. The instant that authority is updated, clients will immediately receive the updated data when it is requested.
来源：https://stackoverflow.com/questions/6517263/how-fast-are-azure-storage-changes-propagated-to-instances