Is state management required in Angular?

In Angular applications, we usually maintain the data in the services . … As you look at the following picture, without state management data is everywhere. You can’t really have a single source of truth for your data this kind of setup is very difficult to maintain and it makes your development process slow.

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What is a good use case for NgRx store?

Testability as @muetzerich mentioned already is also a benefit of using ngrx/store. Reducers are pure functions and those functions are easy to test, because they take an input and simply return an output and do not depend on properties outside the function and have no side-effects, e.g. http calls etc.

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What are actions in Angular?

An action is a JavaScript object that has a type property describing what happens in your app , such as a user wants to buy IBM stock. Besides the type property, an action object can optionally have another property with a payload of data that should change the app state in some fashion.

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What is NgRx store?

Ngrx is a group of Angular libraries for reactive extensions . Ngrx/Store implements the Redux pattern using the well-known RxJS observables of Angular 2. It provides several advantages by simplifying your application state to plain objects, enforcing unidirectional data flow, and more.

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