Best practices: Building Angular Services using Facade design pattern for complex systems
Angular Services
Angular services concept always confuses newbies with server side REST services. If you are still not sure what it is, I will recommend you to read Angular documentation
Angular Services have responsibility to provide application data/business logic to components. Components should take/provide data to service and function as glue between view and service. It is service who can decide whether to provide mock data or go to server and fetch data from database/file/another service(s) etc.
Ideally, services should be feature oriented. You have choice to build a giant service class or micro services collections. In first approach, there shall be only one service which shall contain all business logic and shall be provided via Angular Dependency Injection in all components within system. Issue with this approach is, giant service class shall get bloated eventually leading performance issue. Every component shall get injected with service and functionality which is not required to consumer component at all. Do you think it is good?
