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WCF Architecture Key Notes
Vijay Prativadi
Dec 24, 2011
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The Windows Communication Foundation (WCF) Architecture is divided into five different layers.
The Windows Communication Foundation (WCF) Architecture is divided into five different layers which are described as below:
Figure 1: WCF Architecture Diagram.
Application Layer
It will describe how the application consumes the WCF service using with different below layers.
Contract Layer
It is the Second Layer of WCF Architecture
Service Contract
Describe the Interface Methods with Service Level Operations.
Data Contract
Describe Data Classes and Method that will be exposed to the client.
Message Contract
Describe the type of format need to be deployed to make communication between client and service.
Policies and Binding
Condition and privileges required to communicate with service.
Service Runtime Layer
This is the third layer of WCF architecture. It mainly deals with different types of behaviors that occurs service runtime.
Error Behavior: Specifies what internal errors occur on service.
Dispatch Behavior: Deals with how message will be processed.
Throttling Behavior: Deals how many processes should be completed.
Metadata Behavior: Conveying metadata information.
Instance Behavior: How many instances will be created is know during service running.
Transaction Behavior: Rollback happens if an error occurs in service.
Messaging Layer
The Communication of message takes place with the help of channels where it is located in channel stack.
Channel Stack has two different types of channels
Transport Channel: Deals with Sending and Receiving messages.
Protocol Channel: Deals with Security, integrity and effective processing.
Activation and Hosting Layer
This layer mainly deals with process of execution and deployment. The Service can be hosted on IIS, WAS, Self Hosting, Windows Services.
I hope this article is useful for you. I look forward for your comments and feedback..
Thanks Vijay Prativadi...
WCF Architecture Key Notes
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