aappddeevv/composing service layers in scala.md

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scala, cake pattern, service, DAO, Reader, scalaz, spring, dependency inejection (DI)

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composing service layers.md

#The Problem We just described standard design issues you have when you start creating layers of services, DAOs and other components to implement an application. That gist is here.

#Working through Layers If you compose services and DAOs the normal way, you typically get imperative style objects. For example, imagine the following:

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