Summary
You’ve learned a lot in this chapter and brought everything we learned in Chapter 7 together. You learned what state management is and why you need a good state management solution. You also learned about immutability, unidirectional data flow, and side effects. After some theory, you started building a state management solution using RxJS’s BehaviorSubject and Subject classes.
When you finished building the state management solution using RxJS, you created a facade service that connects your component layer to the data-access and state management layers of your application. To end your custom state management solution, you converted the RxJS state implementation into a Signals implementation, further simplifying your component layer and facade service.
Finally, you learned about the shortcomings of using RxJS and Signals for your state management solution and replaced them with an NgRx implementation that uses actions, effects, reducers, and selectors.
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