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SolidJS replaces virtual‑DOM diffing with fine‑grained reactivity. Learn how signals and effects let you write efficient UI code, illustrated with a counter example and trade‑off discussion.
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.
Goal: Verify if NgRx Effects that use mergeMap preserve the initiation order of concurrent HTTP requests when dispatching success/failure actions, and measure any resulting latency in state updates. Constraints: The ordering depends on the RxJS operator (mergeMap, concatMap, exhaustMap), NgRx Store version, and selector memoization; there is no built‑in guar
Goal Determine whether to invest in making all effects remount-safe or disable <StrictMode> for a React 18+ codebase that ships to production. Constraints and uncertainty React 18's development <StrictMode> intentionally runs each effect's setup–cleanup–setup cycle twice on mount to expose missing cleanup and non-idempotent logic. Production buil
Goal: Determine how the interaction between NgRx Effects and Angular's HttpClient influences request‑latency when several Store actions are dispatched concurrently. Constraints: NgRx Effects process actions synchronously; the choice of mergeMap versus concatMap changes request ordering and concurrency, while the Store runs reducers on the microtask queue and
Problem with automatic token refresh In many ngrx applications the AuthEffects intercept a RefreshToken action, call the backend, and dispatch a new SetToken action. When the backend is unreachable, the effect may keep re‑dispatching RefreshToken endlessly because no retry limit is defined. Additionally, the meta‑reducer that clears the store on Logout must
When configuring an NgRx Effect with dispatch: false , the effect performs side‑effects such as logging or analytics without emitting new actions. The effect’s subscription to the global Actions stream is managed by the EffectsModule, which lives for the lifetime of the application. If the effect’s inner observable (e.g., a timer, websocket, or HTTP request)
When using NgRx Effects to drive user notifications, developers often rely on the debounceTime operator to collapse rapid successive actions into a single alert. The goal is to keep alerts useful while eliminating notification noise. Although debounceTime can be combined with distinctUntilChanged to ignore duplicate payloads, NgRx offers no built‑in mechanis
angular
ngrx
rxjs
react