ITNotes - Page 19 of 142 - From Terminal to Cloud

SQL Refactoring: How to Convert Nested Subqueries to CTEs for Better Performance and Readability

September 14, 2026

Deeply nested SQL subqueries are hard to read, debug, and maintain. This guide shows you how to convert them to Common Table Expressions (CTEs) step by step, with real before/after examples and performance verification tips for PostgreSQL and MySQL.

Database

Advanced Vietnamese Search in PostgreSQL and MySQL: Collation, Unaccent, and Index Optimization

September 14, 2026

Vietnamese diacritics break naive database search queries. Here's how to configure Collation in MySQL and the Unaccent extension in PostgreSQL — plus functional and GIN indexes — so searches work correctly without a performance hit.

Programming

Professional Smart Contract Development: A Practical Guide to Solidity and Hardhat

September 13, 2026

Ditch the browser-based editors. Learn how to set up a professional Hardhat environment, write tested Solidity code, and deploy smart contracts with confidence.

Programming

Mastering Astro’s Island Architecture: A Field Guide to High-Performance Frontends

September 13, 2026

Learn how to slash Total Blocking Time and boost Lighthouse scores using Astro's Island Architecture. This guide covers client directives, cross-framework state management, and real-world performance metrics.

Programming

High-Performance Image Processing in Go: Why libvips Beats the Standard Library

September 13, 2026

Learn how to replace memory-heavy image libraries with bimg and libvips in Go. This guide provides a practical worker pool implementation and tips for reducing RAM usage by 90%.

Stop Searching, Start Finding: Self-Host a Private AI Search with Khoj and Docker

September 12, 2026

Keyword search is outdated. Learn how to use Khoj and Docker to build a private, semantic search engine that understands the meaning behind your notes and documents.

DevOps

Beyond Local Storage: Building Fault-Tolerant Kubernetes Volumes with Longhorn

September 12, 2026

Is your data trapped on failing nodes? Learn how to use Longhorn to build a resilient, distributed storage layer for Kubernetes with 3-way replication and S3 backups.

DevOps

Solving the ‘Pending’ LoadBalancer Problem on Bare-metal Kubernetes

September 12, 2026

Struggling with IPs on your local Kubernetes cluster? This guide shows you how to use Kube-vip to enable high availability and load balancing on bare-metal hardware.

Scaling AI: Why Go and Firebase Genkit Outperform Python in Production

September 12, 2026

Move beyond Python bottlenecks. Discover how Go and Firebase Genkit provide a faster, more reliable foundation for production AI features like Tool Calling and RAG.

DevOps

Kubernetes Cleanup: Using Kube-janitor to Slash Dev and Staging Costs

September 12, 2026

Tired of high cloud bills from idle Kubernetes resources? Learn how to use Kube-janitor to automate the cleanup of temporary namespaces and deployments in Dev and Staging.

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

Deploy CrowdSec on Linux: Building a Distributed IPS to Block Brute Force and Web Attacks

Route-Based IPsec VPN with strongSwan and VTI on Linux: Secure Cloud-to-On-Premises Connectivity

Automate Kubernetes Troubleshooting with K8sGPT and Local Ollama

Mastering Outlines in Python: Guaranteed Structured LLM Output with Regex and CFGs

Mastering Cursor Rules and Context Mentions: Standardize Architecture Across Your Dev Team

Deploying HashiCorp Vault on Kubernetes: Dynamic Secrets and Sidecar Injector Guide

Deploying WPA3-Enterprise with FreeRADIUS and EAP-TLS: Mutual PKI Authentication Guide

SQL Refactoring: How to Convert Nested Subqueries to CTEs for Better Performance and Readability

Advanced Vietnamese Search in PostgreSQL and MySQL: Collation, Unaccent, and Index Optimization

Professional Smart Contract Development: A Practical Guide to Solidity and Hardhat

Mastering Astro’s Island Architecture: A Field Guide to High-Performance Frontends

High-Performance Image Processing in Go: Why libvips Beats the Standard Library

Stop Searching, Start Finding: Self-Host a Private AI Search with Khoj and Docker

Beyond Local Storage: Building Fault-Tolerant Kubernetes Volumes with Longhorn

Solving the ‘Pending’ LoadBalancer Problem on Bare-metal Kubernetes

Scaling AI: Why Go and Firebase Genkit Outperform Python in Production

Kubernetes Cleanup: Using Kube-janitor to Slash Dev and Staging Costs