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Windows Azure Programming Patterns for Start-ups by Riccardo Becker

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Queue usage

This section focuses on the queuing facility of the storage service. As described previously in this chapter, queues provide a reliable delivery of messages.

A closer look at the queue

In the following table, the characteristics of Windows Azure queues are listed:

Characteristic

Description

Names must be lower case

Using uppercase or lowercase characters do not affect operations on queues, though the case is preserved by the storage service.

Names are at least three and at most 63 characters long

 

Names can only contain alphanumeric characters

 

No ordering guarantee; based on best-effort FIFO

It is nondeterministic whether or not the messages are sorted in a FIFO order.

Delivered at least once

A message is delivered at least ...

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