What problem does NgRx solve, and when should it be used instead of simple services?

Quick Answer NgRx solves complex shared state management. Use it when: multiple components need the same state, state changes trigger complex side effects, you need time-travel debugging, or state logic is hard to test in services. For simple apps, services with BehaviorSubjects are sufficient. NgRx adds boilerplate - only adopt when service-based state management becomes unmanageable.

Answer

NgRx solves complex application state management problems, especially in large apps where multiple components need shared state.

You should use NgRx when many components read and update global state, require time-travel debugging, offline caching, immutability, or predictable unidirectional data flow.

Small apps do not need NgRx; services or BehaviorSubjects are sufficient.

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What problem does NgRx solve, and when should it be used instead of simple services?

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