Microservices Design Patterns - Branch

Problem Statement

Microservice architecture structures an application as a set of loosely coupled microservices and each service can be developed independently in agile manner to enable continous delivery/deployment. Now consider a case where one service needs output of another service as dependency and client can call any service.


We can use Branch Microservices Design Pattern here. Branch microservice pattern is the extended version of aggregator pattern and chain pattern. In this design pattern, the client can directly communicate with the service. Also, one service can communicate with more than one services at a time. Following is the diagrammatic representation of Branch Microservices.

Branch Microservices Design Pattern


Branch microservice pattern allows the developer to configure service calls dynamically. All service calls will happen in a concurrent manner, which means service A can call Service B and C simultaneously.

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