Chapter 46. Message Queuing
WHAT'S IN THIS CHAPTER?
Message Queuing overview
Message Queuing architecture
Message Queuing administrative tools
Programming Message Queuing
Course order sample application
Message Queuing with WCF
System.Messaging is a namespace that includes classes for reading and writing messages with the Message Queuing facility of the Windows operating system. Messaging can be used in a disconnected scenario where the client and server needn't be running at the same time.
This chapter gives you information about the architecture and usage scenarios of Message Queuing, and then you dive into the classes from the
System.Messaging namespace to create queues, and send and receive messages. You will see how to deal with getting answers from the server with acknowledgement and response queues, and also how to use message queuing with a WCF message queuing binding.
Before diving into programming Message Queuing in the rest of this chapter, this section discusses the basic concepts of messaging and compares it to synchronous and asynchronous programming. With synchronous programming, when a method is invoked, the caller has to wait until the method is completed. With asynchronous programming, the calling thread starts the method that runs concurrently. Asynchronous programming can be done with delegates, class libraries that already support asynchronous methods (for example, Web service proxies,
System.IO classes), or by using custom threads (see Chapter ...