ITNotes - Page 106 of 143 - From Terminal to Cloud

Programming tutorial - IT technology blog

Mastering Mocking and Stubbing in Vitest: A TypeScript Guide for Complex Dependencies

April 21, 2026

Learn how to master Vitest mocking and stubbing in TypeScript. Isolate your unit tests from external APIs and databases to build a faster, more reliable development workflow.

Programming

Making Node.js Apps Resilient: A Practical Guide to Retries and Exponential Backoff

April 20, 2026

API failures are inevitable. Learn how to handle them gracefully in Node.js using exponential backoff, jitter, and smart retry logic to improve system reliability.

Building Autonomous Python Agents with the Claude SDK

April 20, 2026

Transform your AI from a passive chatbot into an active agent. This guide shows you how to use the Claude SDK to handle tool calling, state management, and complex Python workflows.

HomeLab

Ditch the Spreadsheets: Professional HomeLab Asset Tracking with Snipe-IT and Docker

April 20, 2026

Ditch the messy spreadsheets. This guide shows you how to deploy Snipe-IT on Docker to track hardware, components, and warranties like a professional sysadmin.

DevOps

Automating Database Schema Changes with Atlas and GitHub Actions: A GitOps Guide

April 20, 2026

Tired of manual SQL migrations breaking your production environment? Learn how to automate database schema changes using Atlas and GitHub Actions in this step-by-step GitOps guide.

Database

PostgreSQL Multi-tenancy: Choosing Between Schemas and RLS for Your SaaS

April 20, 2026

How do you ensure data isolation in a SaaS app? We compare PostgreSQL Schema-based isolation and Row-Level Security (RLS) with concrete examples and performance tips.

Database

Beyond Basic Queries: Mastering SQL Window Functions for Real-World Analytics

April 20, 2026

Upgrade your SQL skills beyond basic joins. Discover how Window Functions like RANK, LAG, and rolling averages can transform your data analysis and make your reports run 10x faster.

Networking

Stop Flying Blind: Mastering Network Visibility with LibreNMS and SNMP

April 20, 2026

Tired of guessing why the network is slow? This practical guide walks you through deploying LibreNMS and SNMP to gain total visibility into your switches, routers, and servers.

Networking

Build a Secure Enterprise WiFi with WPA3 and 802.1X on Linux: A hostapd and VLAN Guide

April 20, 2026

Ditch shared WiFi passwords for good. This guide walks you through setting up WPA3-Enterprise and 802.1X on Linux using hostapd and FreeRADIUS for secure, individual user logins and VLAN isolation.

Database

Stop Over-Engineering: High-Performance PostgreSQL Search without Elasticsearch

April 20, 2026

Is Elasticsearch overkill for your app? Learn how we achieved sub-100ms search on 1.2M rows using PostgreSQL's native GIN indexes and tsvector.

Fast LLM Fine-Tuning with Unsloth on Linux: Cut 80% VRAM on Consumer GPUs

Mastering ScyllaDB on Docker: Deploying Ultra-Fast C++ NoSQL for High-Throughput Writes

Building an Internal Developer Portal with Spotify Backstage: Software Catalog, TechDocs, and Platform Automation

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

Mastering Mocking and Stubbing in Vitest: A TypeScript Guide for Complex Dependencies

Making Node.js Apps Resilient: A Practical Guide to Retries and Exponential Backoff

Building Autonomous Python Agents with the Claude SDK

Ditch the Spreadsheets: Professional HomeLab Asset Tracking with Snipe-IT and Docker

Automating Database Schema Changes with Atlas and GitHub Actions: A GitOps Guide

PostgreSQL Multi-tenancy: Choosing Between Schemas and RLS for Your SaaS

Beyond Basic Queries: Mastering SQL Window Functions for Real-World Analytics

Stop Flying Blind: Mastering Network Visibility with LibreNMS and SNMP

Build a Secure Enterprise WiFi with WPA3 and 802.1X on Linux: A hostapd and VLAN Guide

Stop Over-Engineering: High-Performance PostgreSQL Search without Elasticsearch