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What is service granularity in SOA?
What is the difference between fine and coarse granularity?
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"Service granularity" is used to measure abstraction depth which has been applied in the services.
Granularity can be divided into two parts, being:
- Fine grained granularity (fine grained): It determines that we need many "grains". We will have services with few operations, but we will divide these operations by several services.
Example: Split operations of a CRUD of customers via WCF service into two services
Servicocadastrocliente with Create client(), Update() and Exclude operations/methods()
Servicovalidarcadastrocliente with Validator(), Validator() and Validator() operations/methods
- Coarse granularity (Coarse grained): It determines that we will have few "grains", much larger. We will have few services, but each of them will contain a much larger portion of operations.
Example: Define only one service for the operations of a customer CRUD via WCF service
Servicocadastrocliente with operations/methods Criaclient(), Updater(), Excluircliente(), Validator(), Validator() and Validator
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