Clients have different needs for their business processes. At times, the computer programs they need are not available commercially. Therefore, they request software developers to create customized programs that meet their specific needs.

The new buzzword among app developers

App developers today aim to create user-friendly and easy-to-deploy programs, which usually require hassle-free maintenance. Software developers use different computer coding languages to develop these applications, and one programming language that is on almost every developer’s lips is NgRx. The program makes apps creation faster.

What is NgRx?

NgRx is the acronym for Angular Reactive Extensions. It is a state management system based on the Redux pattern. State management is a primary component when building an application, while NgRx is a state management solution. It is a framework for developing reactive applications in Angular. Accordingly, NgRx is a superior framework for managing complex states. It is ideal for applications with multiple data sources and many user interactions.

NgRx is a group of Angular libraries that follow the Redux pattern, consisting of three principles: a single source of truth, the state is read-only, and changes are made with pure functions. The library consists of reactive extensions, which help in reactive programming. You are likely to encounter NgRx selectors – these pure, simple functions act as a change detection mechanism of NgRx.

On the other hand, reactive programming is a method developers apply to enable the application to handle data flow and events. When you say reactive programming, you design the different components of the software to react to the changes instead of asking for the changes to occur.

Terms you need to know

  • Refers to a predictable state container for apps that use JavaScript. It helps developers write applications that will perform consistently and run in native, server, or client environments.
  • It means the complete memory of the app. It comprises the data received by the application programming interface (API), application preferences, presentation UI state, and user inputs. An example of an application state is a CRM application’s list of customers.
  • It is the database, which is the single source of truth in NgRx. When you follow the Redux pattern, the store is the only thing you will change when you send actions to the store.
  • These functions understand what to do after receiving an action. It knows the previous state of the app from the store. The reducer applies a “pure” function to it. Pure function means that the feature will always return to the same value without alteration.
  • These are similar to a module that contains the necessary information to change the store.
  • This is the entry point for dispatching the action to the store.
  • Thisrepresents some functions that intercept actions to create side effects that you can use later when building other apps.


NgRx improves the pairing of the application parts. As the application’s state is in one place, the app state is easy to view. It makes testing and debugging the app easier. With the integration of Redux, you can easily add features by following the Redux pattern.

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