Maxime Coquerel • 10/15/2025

Understanding Kubernetes API Server Concurrency Controls

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This technical article details Kubernetes API server concurrency controls, focusing on the --max-requests-inflight and --max-mutating-requests-inflight parameters. It explains their role in preventing resource exhaustion, default values, tuning guidelines, and monitoring via Prometheus metrics. It also covers the relationship with API Priority and Fairness (APF) and considerations for managed services like AKS, EKS, and GKE.

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#api server #performance tuning #observability
Understanding Kubernetes API Server Concurrency Controls

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