Suggest an editImprove this articleRefine the answer for “What is NgRx?”. Your changes go to moderation before they’re published.Approval requiredContentWhat you’re changing🇺🇸EN🇺🇦UAPreviewTitle (EN)Short answer (EN)**NgRx** is a library for managing state in Angular applications, based on the Redux idea: all state is stored in one place and changes only through **actions**. **Key point:** NgRx provides order and control when data is complex and depends on many components; for small projects it can be overkill.Shown above the full answer for quick recall.Answer (EN)ImageNgRx is a library for managing state in Angular applications. It is based on the **Redux** idea: all state is stored in one place and changes only through special events called **actions**. ### Simply put 1. **Store** - a large object that holds all the state (for example, the user, the cart, settings). 2. **Actions** - commands like "Add to cart" or "Load user". 3. **Reducers** - functions that define how the state changes after each command. 4. **Selectors** - for conveniently reading the parts of the store you need (for example, just the user's name). 5. **Effects** - for working with the server: if something needs to be loaded from an API, an effect listens for the action and makes the request. ### Example You click "log out" → a `logout` action is dispatched → the reducer clears the user in the store → the component receives the new state → Angular re-renders it. ### When NgRx is needed - many different pieces of state, - there is asynchronous logic (API calls), - you need to clearly understand what changes, where, and when. If the project is small, NgRx can be overkill. But if the data is complex and depends on many components, it provides order and control.For the reviewerNote to the moderator (optional)Visible only to the moderator. Helps review go faster.