Explain Kubernetes resource management including requests, limits, and Quality of Service classes.

Kubernetes resource management ensures efficient cluster utilization and prevents resource contention through requests, limits, and QoS classes.\n\nResource Requests: Minimum guaranteed resources\n• Used by scheduler for pod placement\n• Ensures pod gets required resources\n• Affects cluster capacity planning\n\nResource Limits: Maximum allowed resource usage\n• Prevents resource hogging\n• Triggers throttling or termination\n• Protects other workloads\n\nQuality of Service Classes:\n• Guaranteed: requests = limits for all containers\n• Burstable: requests < limits or only requests specified\n• BestEffort: no requests or limits specified\n\nExample:\nresources:\n requests:\n memory: "256Mi"\n cpu: "250m"\n limits:\n memory: "512Mi"\n cpu: "500m"\n\nBest Practices:\n• Always set resource requests\n• Set appropriate limits to prevent OOM kills\n• Monitor resource usage patterns\n• Use vertical pod autoscaler for optimization