Demonstrate "architectural pragmatism." Acknowledge that while NgRx is great for massive global states, many apps are better served by BehaviorSubject-based services (the "Observable Data Services" pattern) or the new Signal Store . Knowing when not to use a heavy library is a sign of a senior engineer. 5. Security and Testing
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“I have two child components of the same parent. They both inject a service. Does that service have one instance or two?” Demonstrate "architectural pragmatism
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