🎬 Interactive Explainers
Kuch concepts padhne se nahi, dekhne se click karte hain. Har explainer me: baton step-by-step
khulta hai, ▶ Auto-play baithe-baithe dekho, har step pe ek 💡 aha, myth-buster flip cards — sab Hinglish.
Padhte-padhte picture khud banti hai. (Aage › · ‹ Peeche · arrow keys · theme toggle)
🧩 Start here — how it ALL connects
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Sab kaise jude hain — ek baton, poora toolchain8 handoffs: Terraform→Ansible→Docker→CI→Git→Argo→K8s→users→observability. Har stage se uske deep explainer tak. Ye map baaki 12 ko jodta hai.
▶ Kholo
🧠 The experience shortcut — production reflexes
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Production Reflexes — 2–3 saal ka tajurba, ek page me36 flip-cards jo docs me nahi milte: issue→instant solution reflexes, daily shortcuts (dry-run YAML, jsonpath, debug pods), classic workarounds (CrashLoop me ghusna, distroless debug, rate limits), aur senior habits (rollback-first, one-change, restore drills). Filter + search.
▶ Kholo
🚨 Test yourself — diagnose real incidents
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Incident Simulator — clues do, khud diagnose karo14 real prod incidents: CrashLoop vs OOMKilled vs ImagePull, liveness-vs-readiness, CPU-throttle, selector vs targetPort vs localhost-bind, config-reload, PVC-finalizer, TF-state-lock, ArgoCD self-heal, rollback-decision. Har case me pattern-match trap — galat chuno to "evidence padho" sabak khulta. Score + streak.
▶ Khelo
🏗️
Terraform — plan → apply → state400 clicks → 10 lines. Bill dekho (plan), pay karo (apply), diary (state), dobara chalao = No changes.
▶ Kholo
🔧
Ansible — ek playbook, N serversAgentless SSH, module check-then-act, handler sirf change pe, doosra run changed=0.
▶ Kholo
📦
Docker — Dockerfile → containerRecipe → layers (cached, order matters) → immutable image → isolated Linux process.
▶ Kholo
☸️ Kubernetes
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Pod Anatomy — kaun pod banata · andar · bahar · nodeClick-to-explore map: Deployment/StatefulSet/DaemonSet/Job/CronJob (pod banate) · init/main/sidecar (andar) · Service/ConfigMap/NetworkPolicy (bahar rules) · kubelet/kube-proxy/CNI (node). 4 colour-coded buckets — poora K8s naksha ek jagah.
▶ Kholo
🌐
Request kaise pod tak pahunchta — 7 hopsDNS → LB (L4) → Ingress (L7) → Service → kube-proxy kernel DNAT → healthy pod.
▶ Kholo
🔄
Rolling update & rollbackNaya pod READY hone par hi purana hatega (zero downtime); bug? rollout undo — instant.
▶ Kholo
🔁
Pod maaro — wapas aa jaata (self-heal)Reconciliation ka dil: desired vs actual. Live pod-tray ke saath.
▶ Kholo
🗄️
StatefulSet + PVC — data survivespostgres-0 delete karo — PVC bound rehti, naya pod wahi mount karta, data intact.
▶ Kholo
📈
HPA — autoscalingLoad spike → metrics-server → ceil formula → pods badhe; giri → 300s stabilization → ghate.
▶ Kholo
🚀 Ship it — CI/CD + GitOps
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CI/CD pipeline — git push to productiontest → build → Trivy scan → SHA push → manifest update. CI cluster ko chhoothi tak nahi.
▶ Kholo
🚀
Ek git push → live pod (the spine)Argo pull → rolling update → live. GitOps handshake + rollback = git revert.
▶ Kholo
🎛️
Helm vs Kustomize — one YAML, many envsPrinter (template+values) vs sticky-note (base+overlay). billfree=Helm, VANTA=Kustomize.
▶ Kholo
🌍 Deliver at scale — the edge
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CDN — content users ke paas, load origin se doorEdge cache HIT/MISS, offload magic (1M users → 1 origin request), live-video segments, boundary → K8s. IPL 50M ka jawab.
▶ Kholo
👁️ Operate
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Observability — the 2 a.m. flowmetric (kya) → alert → dashboard → log (kyun) → trace (kahan) → mitigate → fix.
▶ Kholo
Ye explainers relevant chapters ke andar bhi embedded hain — jahan concept pehli baar aata hai.