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Lessons (5)

• GitOps, Progressive Delivery and Observability

  Ship safely with Argo CD and canaries, watch the cluster with Prometheus, and scale smarter with VPA, KEDA …

• Extending Kubernetes: CRDs, Operators and Admission

  … cert-manager, Prometheus Operator, CloudNativePG, Strimzi (Kafka), Argo CD, Crossplane. Build your own with: Tool Language Notes --- --- --- Kubebuilder …

• Consumers & Consumer Groups

  … Burrow, Kafka UI, Prometheus exporters. Handling failures: retries and dead-letter topics What if a message can't …

• Observability: Logs, Metrics & Traces

  … B[Service B + OTel SDK] -- C C -- P[(Prometheus<br/ metrics)] C -- J[(Jaeger / Tempo<br/ traces)] C …

• Containers at Scale: ECS Deep Dive and EKS

  … repeatable clusters. - Observe with Container Insights , Amazon Managed Prometheus and Grafana, or your own stack. - Control cost: right …