Gateway aggregation
In a microservices setup, the application is made up of multiple domains, and each domain implements its own microservice counterpart. Since the domain is segregated, the data that is required for the client application view can be constructed by executing multiple calls for the backend services. In an evolving application ecosystem, this will, in time, push all the complexities of the business tier into the client application. While this could still be acceptable for a web application, a mobile application's performance will degrade in time as the complexity of the system grows. In order to avoid this problem, a gateway service facade can be placed in between the client application and the microservices:
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