Answer
Watch streams push revision-based updates efficiently; polling overloads API server and causes stale reads.
Quick Answer
Polling would require each component to ask the API server "any changes?" every N seconds — generating massive load and adding latency proportional to the poll interval. Watches are long-lived HTTP connections where the API server pushes events to clients instantly when objects change. Much lower API server load and near-real-time response to state changes.
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