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Developer tools · #ngrx
Storing filtered copies in NgRx state leads to stale views and duplicated data. Derive visible items with memoized selectors and props instead.
Diagnose and fix NgRx entity adapter state inconsistencies with a clear symptom table, ordered checks, and concrete fixes. Verify uniqueness, immutability, and selector memoization to keep your store reliable.
NgRx Effects centralize async side effects, but choosing the wrong flattening operator or boundary can corrupt state. Here is an architecture note on when to use them and how to verify cancellation.
Stop manually mapping through arrays in your NgRx reducers. Learn how to use the NgRx Entity Adapter to normalize state for O(1) lookups and cleaner CRUD logic.
NgRx Entity Adapter replaces hand‑written CRUD reducers and selectors with a normalized state shape and immutable helpers. Here’s a worked ticket‑list example, plus the three sharp edges to decide on up front.
Dispatched an NgRx action and nothing happened? A fixed diagnostic order isolates the five real causes: registration scope, action mismatches, dead effect streams, wrong flattening operators, and missing reducer handling.
NgRx Entity Adapter normalizes arrays into a dictionary for O(1) lookups, provides ready-made CRUD reducers and selectors, and cuts boilerplate by 60–80%. Includes a 10k-record demo, performance caveats, and migration tips.
Signals, RxJS services, or NgRx SignalStore? A constraint-first comparison for Angular 17+, with a working cart store example and a bundle-and-profile verification checklist.
NgRx Effects let you decouple async logic from components and reducers. Learn how to set up a functional effect, handle errors, and avoid common pitfalls with a concrete example and verification steps.
angular
rxjs