Welcome to my Digital Brain
Navigate · Recently Updated · Projects · Domains · Sources
I am Rakesh Kadam, a DevSecOps Lead and AI Enthusiast building at the intersection of distributed systems and machine intelligence.
This space is my Digital Brain—a public-facing knowledge base where I synthesize what I consume so it compounds over time. Unlike a traditional blog, this is a living codebase of thought: understanding evolves here, it isn’t just documented.
The architecture follows Andrej Karpathy’s LLM-Wiki pattern—a persistent, agent-maintained artifact where an AI agent handles structure, cross-references, and synthesis as I ingest new information. Some notes will be incomplete; some ideas will change. That’s the point.
Map of Content
How to Navigate
- Browse — Use the sidebar to explore domains and project wikis.
- Search — Press
Cmd + K/Ctrl + Kto find concepts, tools, or commands. - Connect — Hover any link for a preview; open the Graph View to see how ideas intersect.
- Track — Check the Knowledge Log for a chronological record of recent ingests.
Recently Updated
The most recent ingestions and synthesis updates.
| Date | Action | Topic |
|---|---|---|
| 2026-06-08 | ingest | CKA Day 15 — Kubernetes Node Affinity Explained |
| 2026-06-08 | ingest | CKA Day 14 — Taints and Tolerations in Kubernetes |
| 2026-06-08 | ingest | CKA Day 13 — Static Pods, Manual Scheduling, Labels, and Selectors |
| 2026-06-08 | ingest | CKA Day 12 — DaemonSet, Job & CronJob Explained |
| 2026-06-03 | ingest | CKA Day 11 — Multi Container Pod Kubernetes: Sidecar vs Init Container |
| 2026-05-30 | ingest | CKA Day 10 — Kubernetes Namespace Explained |
| 2026-05-28 | ingest | CKA Day 9 — Kubernetes Services Explained |
| 2026-05-28 | ingest | CKA Day 8 — Deployments, ReplicaSets & Replication Controllers |
| 2026-05-21 | ingest | CKA Day 7 — Pod Explained: Imperative vs Declarative | YAML Tutorial |
| 2026-05-21 | ingest | CKA Day 6 — Kind Multi-Node Cluster Setup |
| 2026-05-21 | ingest | CKA Day 5 — Kubernetes Architecture Explained |
| 2026-05-21 | ingest | CKA Day 4 — Why Kubernetes Is Used |
| 2026-05-21 | ingest | CKA Day 3 — Multi-Stage Docker Build |
| 2026-05-21 | ingest | CKA Day 2 — How To Dockerize a Project |
Project Wiki
Synthesized knowledge from real-world production work.
| Project | Stack | Key Notes |
|---|---|---|
| Web3 Infrastructure | Docker · Traefik · NestJS | Networking, Routing, Observability, DR |
| Internal Observability | Teleport · Loki · Grafana Alloy | Scalable Logging, Identity & Access |
| Digital Brain | Quartz · Cloudflare · AI Ingest | Zero-Trust Gating |
| Side Projects | CLI · Draw · Todo · Games | Vibecoded & self-hosted |
Learning Trackers — Course progress, certifications, and milestones.
Technical Domains
Curated concepts, patterns, and references by technology. Ordered by current activity level.
Kubernetes & CKA
Currently the most active domain — 40-day certification course in progress.
| Page | Description |
|---|---|
| Index | Cluster architecture, workloads, networking, storage |
| CKA Certification | Exam structure, domains, and prep strategy |
| CKA Study Roadmap | 40-day learning plan and daily schedule |
| Why Kubernetes? | Problems K8s solves and when NOT to use it |
| Kubernetes Architecture | Control Plane, Worker Nodes, component deep-dive |
| Kind Cluster Setup | Local multi-node K8s cluster with Kind |
| Pod Fundamentals | Pods, imperative vs declarative, YAML basics |
| Multi-Container Pods | Sidecar, init, adapter, ambassador patterns |
| Init Containers | Pre-start setup, validation, and migration |
| Sidecar Pattern | Auxiliary containers for logging, monitoring, proxying |
| Kubernetes Environment Variables | ConfigMap, Secret, Downward API injection |
| Pod Commands and Arguments | Overriding ENTRYPOINT and CMD |
| Deployment, ReplicaSet & Replication Controller | Self-healing, scaling, rolling updates, rollback |
| Kubernetes Services | ClusterIP, NodePort, LoadBalancer, ExternalName, Endpoints |
| Kubernetes Service Types | Detailed comparison and YAML patterns for each type |
| Kubernetes Namespaces | Logical isolation, multi-tenancy, resource quotas, and default namespaces |
| Kubernetes DaemonSet | Node-level workload: one Pod per node for agents, monitoring, CNI |
| Kubernetes Jobs | Batch execution: finite tasks with completions, parallelism, and retries |
| Kubernetes CronJobs | Scheduled batch: cron-based Job creation with concurrency and history controls |
| Kubernetes Static Pods | Node-level control plane bootstrapping: kubelet-managed Pods without API server involvement |
| Kubernetes Labels and Selectors | Metadata and query system: the glue between Services, controllers, and Pods |
| Kubernetes Manual Scheduling | nodeName, nodeSelector, and taints/tolerations for bypassing or constraining the scheduler |
| Kubernetes Taints and Tolerations | Node taints and Pod tolerations: effects, built-in taints, and dedicated node pools |
| Kubernetes Node Affinity | Advanced positive scheduling: rich operators, soft/hard constraints, and the taints+affinity production pattern |
AI & LLMs
The largest and fastest-moving domain. See the AI & LLMs Index for full subtopic breakdown.
| Page | Description |
|---|---|
| Index | Claude Code, agentic workflows, infrastructure, and research |
Docker & Containers
Prerequisite domain for CKA and production containerization.
| Page | Description |
|---|---|
| Index | Compose, networking, security, and best practices |
| Docker Fundamentals | Containers, images, and the Docker workflow |
| Dockerize a Project | Writing Dockerfiles, building images, running containers |
| Run vs Attach vs Exec | Container lifecycle commands |
Security
| Page | Description |
|---|---|
| Index | DevSecOps, hardening, identity |
| Zero-Trust Access | Teleport, BeyondCorp patterns |
| AI Security | Securing AI-generated code and pipelines |
System Design
| Page | Description |
|---|---|
| Index | Overview of all system-design notes |
| API Communication Patterns | REST, gRPC, GraphQL, WebSockets |
| Client-Server Architecture | Fundamentals and patterns |
| Webhooks | Design, retries, security |
| CAP Theorem | Consistency vs availability trade-offs |
Observability
| Page | Description |
|---|---|
| Index | Prometheus, Loki, Grafana stack |
| Grafana Alloy | Log shipping and telemetry |
| Product Analytics | PostHog, event tracking |
Tooling
| Page | Description |
|---|---|
| Index | Dev tooling overview |
| VS Code Remote SSH | Remote dev workflow |
| PostHog | Product analytics setup |
Blockchain & Web3
| Page | Description |
|---|---|
| Index | Smart contracts, node infrastructure, Web3 patterns |
Programming
| Page | Description |
|---|---|
| Programming Fundamentals | Core concepts and mental models |
| Python Basics | Language fundamentals |
Entities
People and tools I track and reference frequently.
| Entity | Role |
|---|---|
| CampusX | AI/ML education channel (primary Claude Code learning source) |
| Hitesh Choudhary | Developer educator |
| Daniel Miessler | Security & AI thinker, creator of Fabric |
| Exa | AI-native search tool |
| Tech Tutorials with Piyush | Kubernetes & DevOps educator (CKA course source) |
Raw Sources
Original immutable documents ingested into this brain.
| Category | Index |
|---|---|
| Videos | Consumed Videos |
| Tutorials | Other Tutorials · Udemy Gen AI Course |
| Posts & Blogs | Karpathy LLM-Wiki · Agentic DevOps · Securing AI Code |