Như đã đề cập trước đó, có nhiều công nghệ có sẵn để xây dựng các ứng dụng phân tán. Từ Microsoft một mình, bạn có thể sử dụng COM +, Dịch vụ Doanh nghiệp. NET, MSMQ, NET Remoting, Dịch vụ Web, và Web Services Enhancements (WSE), để đặt tên chỉ là một vài. | 156 CHAPTER 7 .NET WINDOWS COMMUNICATION FOUNDATION WCF and Productivity As mentioned earlier there are many technologies available for building distributed applications. From Microsoft alone you can use COM .NET Enterprise Services MSMQ .NET Remoting Web Services and Web Services Enhancements WSE to name just a few. Each of these requires different domain knowledge and different programming skills. WCF incorporates all of these into a single programming model reducing this overall complexity and making it easier for the developer to focus on the business logic that you are paid to produce. Additionally this allows you to combine each of these technologies into an application in ways that may not be possible today. As you work through this chapter you ll see how through configuration changes in .config files you will be able to finely control different services that may have required reams of code before WCF Figure 7-1 shows the pre-WCF stack of technologies that can be used to build connected applications. These technologies are described in the following list ASMX Web Services You ve used this throughout this book. It is a technology that makes web services easy to implement and deploy. It includes the basic Web Services technology and interoperability stack allowing for stateless connected applications that use SOAP to communicate with clients and servers on Microsoft or other technology stacks. WSE As web services have evolved so have the standards that implement them. New requirements have brought about new standards in security addressing and more. Microsoft continually updates WSE to bring these standards to ASMX services. Messaging The namespace in the .NET Framework allows programmatic access to Microsoft Message Queuing MSMQ . This allows developers to build messaging-oriented middleware applications where reliable delivery of messages between systems is paramount. Remoting The namespace in the .NET Framework allows .
