Does Angular have a store?

The store does solve the problem of component interaction , but it also creates the need for managing state in your application, which might otherwise not exist when using other solutions. This might mean that in Angular a store solution would be much less often useful than in React?21 Oca 2022

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What is a good use case for NgRx store?

Testability as @muetzerich mentioned already is also a benefit of using ngrx/store. Reducers are pure functions and those functions are easy to test, because they take an input and simply return an output and do not depend on properties outside the function and have no side-effects, e.g. http calls etc.

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