GitOps Reality with ArgoCD: When Declarative State Fights the Database

GitOps treats application deployments as stateless Git diffs, but production backends run on stateful databases. Here is why automated Git rollbacks break under schema migrations, and how to decouple delivery safely.

September 30, 2026 · 6 min · Hanh Pham

CFS Quota Throttling & Silent OOMKills: The Fallacy of Kubernetes CPU Limits

Setting hard CPU limits on latency-sensitive microservices destroys p99 response times while average utilization appears deceptively low. Here is how Linux CFS quotas, Go GOMAXPROCS, and GOMEMLIMIT actually behave under load.

September 28, 2026 · 8 min · Hanh Pham

Zero-Downtime Kubernetes: Why preStop Sleep 5 Is an Architectural Anti-Pattern

Slapping a five-second sleep into your container lifecycle masks a distributed control plane race condition. Here is how packet routing, EndpointSlice propagation, and application connection draining actually fit together.

September 26, 2026 · 7 min · Hanh Pham