Answer
React reveals resolved subtrees early and delays fallback rendering to avoid flicker using revealTimers and cache heuristics.
Quick Answer
React uses two strategies: if data resolves quickly (under ~250ms), React delays showing the fallback at all — the content appears directly. If data is slow, React shows the fallback immediately. This prevents unnecessary fallback flashes for fast connections while still providing feedback for slow ones.
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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