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Setting Up a Squid Proxy Server on Linux: Access Control, Content Filtering, and Bandwidth Caching

April 8, 2026

Squid proxy server gives you fine-grained control over your network's outbound traffic — access control by IP or user, content filtering via domain blocklists, and HTTP caching to reduce bandwidth costs. This guide walks through a complete production-ready setup on Linux.

Programming

Building Professional CLI Tools with Python Click and Rich: From Simple Script to Polished Command-Line App

April 8, 2026

Learn how to build professional Python CLI tools using Click and Rich by comparing approaches, understanding trade-offs, and following a hands-on implementation guide. From decorator-based commands to Rich tables and progress bars, this tutorial covers everything you need to turn a Python script into a tool your team will actually use.

Programming

Clean Architecture in Go: Build Maintainable and Scalable Go Applications

April 8, 2026

Clean Architecture in Go enforces strict dependency rules that keep business logic isolated from databases and HTTP frameworks. This guide walks through a practical Go project structure with real code examples showing how to write fast, testable, and maintainable services.

Database

Managing Database Transactions in SQL: Ensuring Data Consistency and Integrity

April 8, 2026

Database transactions are the mechanism that keeps your data consistent when multiple SQL statements need to succeed or fail together. This guide covers ACID properties, COMMIT/ROLLBACK, SAVEPOINTs, isolation levels, and practical patterns to avoid data corruption in production.

Extract and Process PDF Tables with Docling for RAG Systems

April 8, 2026

After 6 months of using Docling in production for PDF-heavy RAG systems, I share how to extract tables properly, chunk them intelligently, and index them for accurate retrieval. Covers quick start, pipeline setup, and hard-won practical tips.

AI-Powered Test Automation: Building Resilient Playwright Scripts with LLMs

April 7, 2026

Tired of fixing broken CSS selectors? Learn how to use GPT-4o and Playwright to build self-healing test suites that adapt to UI changes automatically.

HomeLab

Build Your Own Private CA with Step-ca: Stop Ignoring SSL Warnings in Your HomeLab

April 7, 2026

Tired of SSL warnings in your HomeLab? This guide shows you how to build a Private CA using Step-ca to automate internal certificates without internet access.

DevOps

Policy as Code on Kubernetes with Kyverno: Automate Config and Security Checks

April 7, 2026

Learn how to enforce Kubernetes security and configuration policies automatically using Kyverno. This guide compares Policy as Code approaches, covers a production-ready Kyverno setup, and walks through real policy examples — starting safe with audit mode before enforcing.

DevOps

Infrastructure as Code with Pulumi and TypeScript: Manage Cloud Resources Like Real Code

April 7, 2026

Pulumi lets you define cloud infrastructure using TypeScript instead of YAML or HCL — giving you loops, types, unit tests, and reusable components. This guide walks through installing Pulumi, writing your first AWS resources in TypeScript, managing multiple environment stacks, and verifying deployments with previews and stack outputs.

Security

Hardening Linux: A Practical Guide to ClamAV and Rkhunter

April 7, 2026

Secure your Linux server against malware and hidden backdoors. This guide walks you through setting up ClamAV and Rkhunter, automating scans, and managing system integrity.

Kubernetes Disaster Recovery with Velero and MinIO: Complete Cluster Backup Guide

Build Real-Time Apps with Phoenix LiveView: Server-Side State Without JavaScript

Deploy a TACACS+ Server on Linux with tac_plus: Centralized AAA and Command Authorization

Deploy Immich on Docker: Self-Hosted Google Photos Alternative with AI

GitOps for HomeLab: Automate Kubernetes and K3s Deployments with Argo CD

Structured Data Extraction with BAML and Python: Faster LLM Output and Visual Prompt Testing

Mastering HugePages and Transparent HugePages on Linux for PostgreSQL and Redis

Mitigate DDoS with BGP Flowspec and ExaBGP on Linux: Automated Routing-Level Packet Filtering

Deploy Harbor on Docker: Self-Host a Secure Private Container Registry with Trivy and Image Signing for Your HomeLab

Building a Production-Ready Text-to-SQL Engine with Vanna.ai and Python

Setting Up a Squid Proxy Server on Linux: Access Control, Content Filtering, and Bandwidth Caching

Building Professional CLI Tools with Python Click and Rich: From Simple Script to Polished Command-Line App

Clean Architecture in Go: Build Maintainable and Scalable Go Applications

Managing Database Transactions in SQL: Ensuring Data Consistency and Integrity

Extract and Process PDF Tables with Docling for RAG Systems

AI-Powered Test Automation: Building Resilient Playwright Scripts with LLMs

Build Your Own Private CA with Step-ca: Stop Ignoring SSL Warnings in Your HomeLab

Hardening Linux: A Practical Guide to ClamAV and Rkhunter