Services are the engine room of your Angular application. They handle the heavy lifting, the data storage, and the communication with the outside world.
1Encapsulation Best Practices
A well-designed service keeps its data 'private'. Instead of letting components directly push items into a service's array, the service should provide a method like addItem(). This allows the service to perform validation, logging, or state updates (like triggering an observable) every time the data changes. This 'Gatekeeper' pattern ensures that your application state remains predictable and bug-free.
2CLI Efficiency
Using the Angular CLI (ng generate service) is more than just a convenience. It automatically sets up the class structure, adds the @Injectable decorator, and generates a corresponding spec file for unit testing. Following the CLI standards ensures that your project remains organized and that other Angular developers can easily understand your architecture.
