Answer
NodeLease reduces API load by sending lightweight heartbeats instead of full Node updates.
Quick Answer
In large clusters (1000+ nodes), updating full Node status objects (large JSON) every 10 seconds from every node would flood the API server. Node leases use tiny Lease objects (just a timestamp) for heartbeats — 90% less API server load per node. Full Node status updates still happen, but only when the node's status actually changes — far less frequently.
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