Interfaces for the Service layer
Hello everyone, in the context of backend development, what is the advantage of creating interfaces for the Service layer?
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First of all: testability
When writing tests, you can just replace the interface with a mock implementation that does whatever you want in your tests
Apart from that, you could make a different implementation of your service and switch between them
for example maybe you want to support the service being both part of the application or being an external microservice depending on the configuration
Thank you for the response, i got it, i am a student and i am trying to make codes with higher quality and greater complexity. I know how to make the basic CRUD in an MVC using JDBC and Spring but feel stuck when facing bigger challenges. Do you have any advice?
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