making wcf simple

Chief Architect, Tellago, Tellago Studios, Inc

http://weblogs.asp.net/gsusx

Service Versioning

Remove Endpoint-Coupling Between Services and Clients

Managing WCF Configuration

WCF Services Availability

Monitoring Services

Security && Identity Management

Versioning services imposes large degrees of changes on the clients

Multiple versions of the same services might need to be running side by side

Solution: Use WCF Routing Service to abstract the communication across different service versions

Service v1

Routing Service Client

Service v2

Clients are dependent on WCF endpoint changes

High availability requires the deployment of expensive hardware solutions

Solution: Use WS-Discovery to adapt to endpoint changes

Service

Service

Client

WS-Discovery Probe, Match

WS-Discovery Probe, Match

Complexity

Enforcing reusability and consistency across services, clients and environments

Solution: Centralize WCF configuration

Service

Configuration Repository

Client

GET service/config GET client/config

Identifying when a service is available

Avoiding the need for executing service logic

Solution: Implement a Ping Operation Invoker

Service Client

Ping

Ping Operation Invoker

Ping Response

Instrument the message exchange between client and services

Collect near real time metrics about the service runtime behavior

Track the data exchange between clients and services

Solution: Enable and extend service tracking using the Windows Server AppFabric

Service

Client

Security

Identity management

Service dependency modeling

Interoperability

Governance

Testing

Adopting WCF in big SO solutions can introduce some interesting challenges

The extensibility of the WCF programming model together with well established patterns, tools and techniques that can help to address those challenges

Start small, iterate, adopt what makes sense for your organization

Thanks!!!

jesus.rodriguez@tellago.com http://tellago.com http://tellagostudios.com http://weblogs.asp.net/gsusx

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http://microsoft.com/technet http://microsoft.com/msdn

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