Answer
Many controllers react to same event simultaneously, flooding API server.
Quick Answer
Thundering herd happens when many components simultaneously reconnect to the API server after a network partition or API server restart — all sending list requests at once. This floods the API server with expensive list operations. Kubernetes uses exponential backoff with jitter in client reconnection logic to spread reconnections over time.
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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