Kubernetes cluster management, workload scheduling, and production operations.
Go graceful shutdown: SIGTERM handling, health probe coordination, and Kubernetes drain patterns for zero dropped requests.
When to decompose a monolith, how to define boundaries, and the patterns that work: API gateways, sagas, and event-driven comms.
Terraform in production: state locking, module design, environment directories, and CI/CD guardrails that prevent resource destruction.
From 5-second Spring Boot cold starts to 50ms with GraalVM native images. The real gotchas, wins, and whether it's worth it.
Definitive kubectl reference: pod debugging, deployments, StatefulSets, RBAC, scheduling, Helm, and production troubleshooting flowcharts.
Production config in Go with Viper: precedence hierarchy, validation, K8s integration, Vault secrets rotation, and drift detection.
How Kubernetes networking actually works — CNI plugins, kube-proxy iptables chains, the CoreDNS tax, and the debugging commands that find real problems.