Docker Networking
Bridge, overlay & CNI networking — one 5-minute drill a day.
All Challenges
Master DevOps & coding topics in 5–10 days with hands-on email drills. Learn Docker, K8s, SQL, Go, Python, eBPF & more in 5 minutes a day.
Kubernetes OOM
Master OOMKill prevention in Kubernetes. Learn debugging, limits, and profiling—one 5-minute daily email drill for 10 days.
Docker Security
From image hygiene to runtime hardening — one 5-minute drill a day.
SQL Performance
Optimize queries, indexes, and schema — one 5-minute drill a day.