Answer
Use OnPush strategy, immutable data structures, trackBy in ngFor, and detach change detectors when needed. Minimizes unnecessary component re-renders.
Quick Answer
Angular's default change detection (CheckAlways) checks every component on every event. OnPush strategy: only check when @Input reference changes, component emits an event, or async pipe resolves. Use OnPush with immutable state — replacing objects instead of mutating them. This cuts change detection work dramatically for large component trees.
S
SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
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Source: SugharaIQ