ITNotes - Page 49 of 84 - From Terminal to Cloud

Automating Code Reviews: 6 Months with AI-Powered PR-Agent and GitHub Actions

April 19, 2026

Learn how to integrate AI-powered code reviews into your CI/CD pipeline using PR-Agent and GitHub Actions. This 6-month production review covers setup, logic bug detection, and advanced configuration tips.

Linux

Mastering Chroot on Linux: System Rescue and Recovery from a Live USB

April 18, 2026

Chroot is the fastest way to rescue a Linux system that won't boot — reset passwords, fix GRUB, repair broken packages, and recover from bad fstab edits, all from a Live USB. This guide covers real-world recovery scenarios with working commands you can run at 2 AM without thinking.

Database

Recursive CTE in SQL: Handling Tree and Hierarchy Data in PostgreSQL and MySQL

April 18, 2026

Recursive CTEs let you query hierarchical data — org charts, category trees, comment threads — in a single SQL statement, without N+1 queries. This guide covers the pattern in PostgreSQL and MySQL 8.0+ with practical examples and performance tips.

LLM Evaluation: Practical Methods and Tools to Measure AI Model Quality in Production

April 18, 2026

LLM evaluation is the practice of systematically measuring whether your AI model's outputs are accurate, relevant, and safe — not just fast. This guide covers practical setup with DeepEval and RAGAS, CI/CD integration, and production monitoring strategies drawn from real deployment experience.

Database

Scaling PostgreSQL for Time-Series: A Hands-on TimescaleDB Guide

April 18, 2026

Tired of slow PostgreSQL queries? Learn how TimescaleDB uses hypertables and columnar compression to handle millions of rows per day without breaking a sweat.

Building a Local AI Gateway with LiteLLM: Centralize OpenAI, Anthropic, and Ollama

April 18, 2026

Tired of managing multiple AI SDKs? Learn how to deploy LiteLLM as a central gateway to unify OpenAI, Claude, and local models while cutting costs.

Security

Stopping BadUSB: My 6-Month Experience Hardening Linux with USBGuard

April 18, 2026

Physical USB ports are a massive security blind spot. This guide shows you how to use USBGuard to whitelist trusted devices and block BadUSB attacks on Linux.

LLM Fine-tuning with Unsloth and QLoRA: Training Llama 3 on Consumer GPUs

April 18, 2026

Stop hitting CUDA Out of Memory errors. This guide shows you how to use Unsloth and QLoRA to fine-tune Llama 3 on consumer GPUs with 70% less memory and 2x faster speeds.

Networking

Site-to-Site VPN with StrongSwan IPsec IKEv2: A Production-Ready Linux Guide

April 18, 2026

Build a high-performance Site-to-Site VPN using StrongSwan on Linux. This guide covers IKEv2 configuration with swanctl, firewall tuning, and MSS clamping for maximum stability.

Linux

Clonezilla: The No-Nonsense Guide to Linux Disk Imaging and Recovery

April 18, 2026

Ditch the generic backup tools. This expert guide shows you how to use Clonezilla for block-level imaging, network backups via SSH, and restoring systems to smaller disks.

Building a Production-Ready REST API with Spring Boot, Spring Security, JPA, and Docker

Building a Laravel REST API with Docker: From Zero to Production in 2024

Mastering Prometheus Alertmanager: Routing, Grouping, Inhibition, and Smart Alert Delivery to Telegram and PagerDuty

Securing IoT Devices at Home and in Your HomeLab: VLAN Segmentation, Firmware Monitoring, and Blocking Suspicious Connections

Mastering Protocol Buffers: Schema-first API Design for Multi-language Projects

Deploy FerretDB on Docker: MongoDB-Compatible Open Source Database Built on PostgreSQL

Practical Web Security: Hunting XSS, SQLi, and IDOR with Burp Suite Community

Deploy OpenCTI on Docker: Build Your Own Threat Intelligence Lab

Beyond Boolean Soup: Architecting Robust React Logic with XState

Why Is My Linux Load Average High Despite Low CPU Usage?

Automating Code Reviews: 6 Months with AI-Powered PR-Agent and GitHub Actions

Mastering Chroot on Linux: System Rescue and Recovery from a Live USB

Recursive CTE in SQL: Handling Tree and Hierarchy Data in PostgreSQL and MySQL

LLM Evaluation: Practical Methods and Tools to Measure AI Model Quality in Production

Scaling PostgreSQL for Time-Series: A Hands-on TimescaleDB Guide

Building a Local AI Gateway with LiteLLM: Centralize OpenAI, Anthropic, and Ollama

Stopping BadUSB: My 6-Month Experience Hardening Linux with USBGuard

LLM Fine-tuning with Unsloth and QLoRA: Training Llama 3 on Consumer GPUs

Site-to-Site VPN with StrongSwan IPsec IKEv2: A Production-Ready Linux Guide

Clonezilla: The No-Nonsense Guide to Linux Disk Imaging and Recovery