Best approach to design a service oriented system

Posted by Gustavo Paulillo on Stack Overflow See other posts from Stack Overflow or by Gustavo Paulillo
Published on 2010-04-20T15:14:54Z Indexed on 2010/04/20 15:23 UTC
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Filed under:

design

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design-patterns

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web-services

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wcf

Thinking about service orientation, our team are involved on new application designs. We consist in a group of 4 developers and a manager (that knows something about programming and distributed systems). Each one, having own opinion on service design. It consists in a distributed system: a user interface (web app) accessing the services in a dedicated server (inside the firewall), to obtain the business logic operations. So we got 2 main approachs that I list above :

Modular services

Having many modules, each one consisting of a service (WCF). Example: namespaces SystemX.DebtService, SystemX.CreditService, SystemX.SimulatorService

Unique service

All the business logic is centralized in a unique service. Example: SystemX.OperationService. The web app calls the same service for all operations.

In your opinion, whats the best? Or having another approach is better for this scenario?

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