Angular state management ngrx live session

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okay, let's dive deep into angular state management using ngrx with a simulated live session feel. we'll cover the core concepts, build a small application, and walk through the code.

*introduction: why state management?*

before we jump into ngrx, let's address why state management is crucial for modern angular applications. as your application grows in complexity, components start needing to share data, trigger actions that affect other components, and maintain consistent data across different views. without a proper state management solution, you'll likely end up with:

*prop drilling:* passing data through multiple layers of components, making your code harder to maintain and understand.
*tight coupling:* components becoming overly dependent on each other, hindering reusability.
*unpredictable state changes:* difficulty tracking where and how application state is being modified, leading to bugs.
*poor performance:* unnecessary re-rendering of components due to inefficient data updates.

*ngrx: the solution*

ngrx is a powerful, rxjs-based state management library inspired by redux. it provides a centralized, predictable way to manage your application's state. here's the core philosophy:

*single source of truth (store):* all your application's state is held in a single, immutable store.
*unidirectional data flow:* state changes are predictable and flow in one direction.
*immutability:* state is never directly modified. instead, new state objects are created.
*pure functions (reducers):* reducers are pure functions that take the current state and an action as input and return a new state.
*actions:* actions are plain javascript objects that describe an intent to change the state.
*effects:* effects are used to handle side effects, such as making api calls or interacting with external services.
*selectors:* selectors are used to efficiently retrieve slices of the state from the store.

**simu ...

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Angular
state management
NgRx
live session
reactive programming
store
actions
reducers
selectors
effects
observables
state slice
immutability
Angular CLI
debugging