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Microsoft Windows Communication Foundation 4.0 Cookbook for Developing SOA Applications

You're reading from   Microsoft Windows Communication Foundation 4.0 Cookbook for Developing SOA Applications Over 85 easy recipes for managing communication between applications

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Product type Paperback
Published in Oct 2010
Publisher Packt
ISBN-13 9781849680769
Length 316 pages
Edition 1st Edition
Tools
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Author (1):
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Juntao Cheng Juntao Cheng
Author Profile Icon Juntao Cheng
Juntao Cheng
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Table of Contents (20) Chapters Close

Microsoft Windows Communication Foundation 4.0 Cookbook for Developing SOA Applications
Credits
Foreword
About the Author
About the Reviewers
Preface
1. Working with Contracts 2. Endpoint, Binding, and Behavior FREE CHAPTER 3. Hosting and Configuration 4. Service Discovery and Proxy Generation 5. Channel and Messaging 6. Dealing with Data in Service 7. Security 8. Concurrency 9. Extending WCF Runtime 10. RESTful and AJAX-enabled WCF Services 11. Interoperability 12. Diagnostics 13. Miscellaneous WCF Development Tips Index

Specifying a dedicated service instance for a singleton service


Normally, when hosting a WCF service, we only need to specify the service type in the ServiceHost and the runtime will help create the service instance internally, according to the InstanceContextMode we apply on the service class. This makes hosting a WCF service quite simple and convenient; the service developers do not need to know when and how the runtime creates the service instance. However, in some cases, it is useful and necessary to let the developer control when and how the service instance is created.

Getting ready

Singleton is one of the popular design patterns. This pattern can help design a class that will expose one and only one instance of the class over the entire lifecycle of the class or application context. This is very useful in cases where we want to restrict the number of instances of a given class or component.

How to do it...

In this recipe, we will use a sample Voting service to demonstrate how to supply...

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