DevOps
Scale PostgreSQL Connections with PgBouncer
Server had 25 idle connections eating 7.5GB of RAM and doing absolutely nothing. Background workers were silently starving our web app every morning. PgBouncer had …
Tutorials & Guides
Hands-on DevOps, Cloud, and Kubernetes tutorials - from setup to production.
DevOps
Amazon S3 Account Regional Namespaces: Never Lose a Bucket Name Again
AWS just solved the most annoying S3 problem: bucket names taken by strangers, squatters, and that one dev who deleted a bucket and now nobody …
DevOps
PostgreSQL Performance Tuning Deep Dive | Stop Restarting
Stop using restarts as a crutch. Master PostgreSQL performance tuning by optimizing shared_buffers, managing transaction locks, and applying postgresql.conf changes via SIGHUP without downtime. A …
Python
Python Variables & Data Types for Beginners - Day 1
variables and data types - the two most fundamental concepts in any programming language. Everything you'll ever write in Python uses these. Functions, loops, APIs, …
Python
Nobody Explains This Before Teaching Python - So I'm Doing It First (Day 0)
Python is designed for humans, not machines. When you write Python, you're describing what you want to happen, not micromanaging the computer's memory or processor. …
AI
How to Deploy OpenClaw on Ubuntu 24.04 with Telegram Bot Integration
OpenClaw (formerly ClawdBot / MoltBot) is an open-source, self-hosted AI agent gateway. It runs as a persistent background daemon on your server - not a …
Docker
Docker Scout vs Trivy on DHI
Docker Hardened Images through Docker Scout and Trivy in six different configurations on AWS EC2. Scout reported 0–3 CVEs. Trivy reported 10–62. After finding the …
Docker
Docker Hardened Images: The 2026 Architect’s Guide to Supply Chain Compliance
In 2026, a 'Standard' image is a liability. Here’s why Docker Hardened Images are becoming the mandatory baseline for the modern supply chain
AI
How AI Agent Has Been Running Blind.
You log SSH sessions. You audit database queries. You track every production deploy. But when Claude Code reads your .env, runs a shell command, and …