Posted inLinux
Wrangling JSON and YAML: Practical jq and yq Techniques for Linux
Stop fighting with line-based tools like grep. Learn to use jq and yq to navigate and edit JSON and YAML data with structural precision on Linux.
Posted inProgramming
Build Better Technical Docs: A Docusaurus and GitHub Pages Guide
Transform your project's documentation from a simple README into a professional, searchable site. This guide covers Docusaurus setup, MDX customization, and automated deployment via GitHub Actions.
Posted inAI
Self-Hosting Langfuse: A Hands-On Guide to LLM Observability
Ditch the guesswork in AI development. This production-tested guide shows you how to self-host Langfuse for full LLM observability, tracking everything from RAG latency to token costs.
Posted inDatabase
Soft Delete Pattern in Database: Safe Record Deletion, Recovery, and Index Optimization with PostgreSQL and MySQL
Soft delete pattern lets you mark records as deleted instead of physically removing them — enabling safe recovery, audit trails, and GDPR-compliant data retention. This guide covers practical implementation in PostgreSQL and MySQL, including partial indexes, unique constraint handling, and cleanup strategies.
Posted inProgramming
Building High-Concurrency Web Apps with Elixir and Phoenix Framework: From Setup to Production
Elixir and Phoenix Framework use the BEAM virtual machine's lightweight process model to handle millions of concurrent connections without the thread pool bottlenecks common in other stacks. This guide walks through installation, WebSocket channel configuration, production deployment with Mix releases, and real-time monitoring using LiveDashboard and IEx.
Posted inSecurity
Defending Against ARP Spoofing and Man-in-the-Middle Attacks on Linux with arpwatch and arptables
ARP spoofing lets an attacker silently intercept all traffic on your local network — and most standard security setups miss it entirely. This guide covers how to detect ARP-based Man-in-the-Middle attacks using arpwatch, block them with static ARP entries and arptables, and build a lightweight monitoring script for any Linux machine.
Posted inNetworking
Deploying a Wireless Mesh Network with B.A.T.M.A.N. Advanced (batman-adv) on Linux: Self-Healing Infrastructure for HomeLab and IoT
Six months of running batman-adv in production across a HomeLab and IoT deployment. This guide compares mesh networking approaches, breaks down batman-adv's real-world strengths and weaknesses, and walks through a complete implementation on Ubuntu/Debian with batctl monitoring and systemd automation.
Posted inProgramming
Building Cross-Platform Apps with Deno 2.0: CLI Tools, HTTP Servers, and npm Integration
Deno 2.0 lets you build CLI tools, HTTP servers, and full applications in TypeScript with zero configuration — and now supports npm packages natively. This guide walks you through everything from installation to compiling cross-platform binaries, with practical code examples you can use right away.
Posted inNetworking
Ubuntu Dual WAN Load Balancing and Failover with IPRoute2 and Netplan
Learn how to configure Dual WAN Load Balancing and Failover on Ubuntu Server using IPRoute2 and Netplan. This guide covers policy-based routing and automated health checks for high-availability networking.
Posted inLinux
Ditch the Mouse: A Practical Guide to i3wm on Ubuntu
Tired of overlapping windows? This guide shows you how to install i3wm on Ubuntu, configure Vim-style shortcuts, and slash your RAM usage for a faster workflow.