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Sep 5, 2026 12 min

How Kubernetes Ingress Controllers Leak Memory

from DevOps Daily with Fexingo: CI/CD, Kubernetes, and Modern Software Operations Hosted by Fexingo

We dig into why modern ingress controllers like NGINX and Traefik silently consume gigabytes of RAM under moderate load. Lucas breaks down the specific mechanics of connection tracking tables and how default configuration values force production clusters into OOM kills. Luna challenges the assumption that more CPU is always the fix, pointing to memory leak patterns in recent patches. We look at a real-world case where a mid-sized fintech company spent three weeks debugging slow responses before realizing their ingress layer was swapping heavily. This episode gives you one concrete thing to check: your max-worker connections setting. If you are running standard defaults on a cluster handling more than ten thousand concurrent users, you are likely leaking memory without knowing it. We also discuss the trade-off between enabling HTTP/2 push and memory stability. The goal is to help you stabilize your edge traffic without upgrading your node pool size. #KubernetesIngress #MemoryLeak #NGINXConfiguration #TraefikOptimization #DevOpsDaily #CloudEngineering #SystemReliability #TechInfrastructure #SoftwareOperations #FexingoBusiness #BusinessPodcast #CloudCosts #PerformanceTuning #LinuxKernel #NetworkLatency #ProductionStability #DevOpsCommunity #TechLeadership Keep every episode free: buymeacoffee.com/fexingo

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How Kubernetes Ingress Controllers Leak Memory

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This episode is 12 minutes long.

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This episode was published on September 5, 2026.

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