@Henrycloud

How I Built a Real-Time DDoS Detection Engine from Scratch

3d ago · 4 min read · Introduction When your web application is under attack, every second counts. In this post I'll walk you through how I built a real-time anomaly detection engine that watches HTTP traffic, learns what

Grafana Dashboards as Code

Apr 12 · 10 min read · Grafana Dashboards as Code — Destroy the Container, the Dashboard Survives (Week 3) Someone commented on my last post: "Don't forget the nice gradient shade, give it some bling." Challenge accepted. B

Prometheus Deep Dive — Alerts, Debugging, and What

Mar 30 · 9 min read · Actually Happens When Things Don't Work (Week 2) Last week I spun up a working observability stack from scratch. This week I went deeper. And I hit real problems. I'm documenting both — because the de

Observability Customisation

Mar 26 · 6 min read · I Was Handed an Observability Role I Had Never Done Before.Here's What I Built in Week1. My boss sent a message on a Tuesday night. "Can you help with observability customisation?" Prometheus. Grafana

Building Your Own Virtual Private Cloud (VPC) on Linux

Nov 12, 2025 · 6 min read · Ever wondered how cloud providers like AWS create isolated networks for their customers? In this tutorial, I'll show you how to recreate the core functionality of AWS VPC using only Linux networking primitives. This is the same technology that powers...