Answer
Local caches reduce CoreDNS load and latency for frequent lookups.
Quick Answer
NodeLocal DNSCache deploys a CoreDNS instance as a DaemonSet on each node, listening on a link-local IP. Pod DNS resolvers are configured to query this local cache first. Cache hits are answered in microseconds without leaving the node. Only cache misses (first lookup of a new name) go to the cluster CoreDNS. Reduces DNS latency from milliseconds to microseconds for cached lookups.
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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