GeekCoding101 – hands-on tutorials on AI, cybersecurity and vibe-coding
Welcome to GeekCoding101.com – my personal tech blog where I explore the ever-evolving world of AI, Cybersecurity, vibe-coding, and all things tech. Dive in for hands-on tutorials and practical guides to help you make your way to geek. 🚀
Latest Posts
# What Is an MCP Server? How to Build One in Python
8 min read
What the Model Context Protocol is, how MCP servers expose tools, resources and prompts, and how to build, test and connect one with the Python SDK 2.x.
# Understanding OpenDAL Storage in Dify: A New Year's Journey
6 min read
How self-hosted Dify stores files with OpenDAL: OPENDAL_FS_ROOT, .env settings and Docker volume mounts explained, plus fixes for permission errors.
# Agentic Frameworks Compared: LangGraph, CrewAI & More
11 min read
What an agentic framework is, how LangGraph, LlamaIndex, OpenAI Agents SDK, Google ADK and CrewAI compare, plus agentic AI coding frameworks like Claude Code.
# STRIDE Threat Modeling Explained with an Example
10 min read
STRIDE threat modeling walked through on a chat app: spoofing, tampering, repudiation, information disclosure, DoS and elevation of privilege.
# Kubernetes Control Plane Components Explained
7 min read
What each Kubernetes control plane component does: etcd, kube-apiserver, kube-scheduler, controller managers, plus kubelet, kube-proxy and CoreDNS.
# A 12 Factor Crash Course in Python: Build Clean, Scalable FastAPI Apps the Right Way
5 min read
Let’s be honest—plenty of apps “work on my machine” but self-destruct the moment they meet the real world. Configs hardcoded, logs missing, environments confused, and deployments that feel like an…
# Golang Range Loop Reference - Why Your Loop Keeps Giving You the Same Pointer (and How to Fix It)
4 min read
When I first started learning Go, I thought I was doing everything right—until I ran into a weird bug about golang range loop reference. I was iterating over a list of Book structs (of course, I…
# Terraform Associate 003 Exam: How to Prepare
8 min read
Today, I officially passed the HashiCorp Certified: Terraform Associate (003) exam! 🚀
Popular Guides
- OAuth 2.0 Authorization Code Flow, Step by Step
- HTTP Basic Authentication Explained (RFC 7617)
- OAuth 2.0 Grant Types Explained (Is PKCE One?)
- Kubernetes Control Plane Components Explained
- Kubernetes Tutorial Part 1: Multi-Node Cluster on a Mac
- Agentic Frameworks Compared: LangGraph, CrewAI & More
- Ray Serve Explained: Ray Serve vs Ollama vs FastAPI
- STRIDE Threat Modeling Explained with an Example