Reducer

NgRx, short for NgRx Reactive Extensions, is a state management library for Angular applications that implements the Redux pattern using Observables from RxJS. NgRx provides a predictable state container, enabling developers to manage application state, handle side effects, and maintain unidirectional data flow in complex single-page applications (SPAs). It is widely used in web apps, enterprise dashboards, and large-scale front-end projects.

Redux, short for Redux State Management Library, is an open-source JavaScript library for managing application state in a predictable way. Designed to work primarily with React, it can also integrate with other frameworks. Redux can be installed for personal or business use via npm or yarn from redux.js.org, with instructions available at redux.js.org/introduction/getting-started.