1. Explainshell – paste any bash command, and it breaks it down word by word. No more guessing awk or sed.
2. KubeSim – browser-based Kubernetes chaos drills. Crash etcd, break kube-proxy, see if you can recover.
3. AWS Fault Injection Simulator – inject failures in EC2, RDS, or EKS the way AWS does it.
4. etcd Playground – see how Kubernetes falls apart when its “memory” gets corrupted. Practice recovery.
5. Linux Strace Guide – the tool senior engineers use when logs are lying. Debug syscalls directly.
6. Azure Well-Architected Review – learn how Azure designs for availability, security, and cost trade-offs.
7. eBPF Academy – kernel-level observability. Trace sockets, latency, and network drops in real time.
8. Postmortem Templates (Google & Netflix) – write RCAs like FAANG engineers. Learn the structure that matters.
9. Container Security Playground (Katacoda) – hands-on labs to practice securing Docker/K8s workloads.
10. HAProxy Config Explorer – visualize advanced LB configs, spot bottlenecks before they break prod.
11. Helm Best Practices Repo – community-driven repo of anti-patterns and fixes. Learn beyond helm install.
12. Chaos Monkey (Netflix OSS) – the OG chaos tool. Still unmatched for teaching resilience culture.
13. Karpenter Workshop – master AWS-native autoscaling, and how it silently explodes costs if misused.
14. PromCat – curated, production-ready Prometheus dashboards built by Sysdig.
15. Incident.io Learning Hub – how modern teams structure incidents, on-call, and escalations.
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