admin, Author at ITNotes

Hardening the Linux Kernel: A Practical Guide to IMA Configuration

May 22, 2026

Secure your Linux environment by enabling the Integrity Measurement Architecture (IMA). Learn how to detect file tampering in real-time using kernel-level hashing and TPM integration.

Linux

Wrangling JSON and YAML: Practical jq and yq Techniques for Linux

May 22, 2026

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.

Programming

Build Better Technical Docs: A Docusaurus and GitHub Pages Guide

May 22, 2026

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.

Self-Hosting Langfuse: A Hands-On Guide to LLM Observability

May 22, 2026

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.

Database

Soft Delete Pattern in Database: Safe Record Deletion, Recovery, and Index Optimization with PostgreSQL and MySQL

May 21, 2026

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.

Programming

Building High-Concurrency Web Apps with Elixir and Phoenix Framework: From Setup to Production

May 21, 2026

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.

Security

Defending Against ARP Spoofing and Man-in-the-Middle Attacks on Linux with arpwatch and arptables

May 21, 2026

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.

Networking

Deploying a Wireless Mesh Network with B.A.T.M.A.N. Advanced (batman-adv) on Linux: Self-Healing Infrastructure for HomeLab and IoT

May 21, 2026

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.

Programming

Building Cross-Platform Apps with Deno 2.0: CLI Tools, HTTP Servers, and npm Integration

May 21, 2026

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.

Networking

Ubuntu Dual WAN Load Balancing and Failover with IPRoute2 and Netplan

May 21, 2026

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.