Answer
React hydrates based on interaction priority, visibility, and lane scheduling to reduce blocking time.
Quick Answer
Progressive selective hydration prioritizes hydrating Suspense boundaries that the user interacts with first. If a user clicks on a not-yet-hydrated area, React interrupts other in-progress hydration work, hydrates that specific boundary immediately (making it interactive), then resumes hydrating the rest in background.
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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