Break functional and orchestration responsibilities for better testability
Microservice architecture paradigm fits well within the Unix’s first principle/philosophy: “Make one program do one thing well”. We love creating small services which has identity of its own (within a bounded context). These services have their own CI/CD pipelines and provides loose coupling b/w components which significantly improves our ability to deliver code to production. In reality, a workflow can span multiple services. Its very common to find scenarios like below: In the above example, a workflow spans 3 services (Service-1, 2 and 3). Service1 receives the original request. In order to process this request, it GET(s) some data from its dependent services(d1/d2/d3). It further runs some business logic and produces an intermediate response #A. It then makes a state mutable call (POST/PUT/DELETE/PATCH) to Service-B using #A as input and waits for its response. Service-B follows the same paradigm and the workflow ends when all services returns. The scenario above