ITNotes - Page 42 of 143 - From Terminal to Cloud

PostgreSQL Job Queue with SKIP LOCKED and Advisory Locks: Background Tasks Without Redis or RabbitMQ

July 20, 2026

Learn how to build a reliable background job queue using PostgreSQL's SKIP LOCKED and Advisory Locks — no Redis or RabbitMQ required. Covers worker implementation in Python, retry logic with exponential backoff, per-resource locking, and queue monitoring using plain SQL.

Build a Personal AI Knowledge Base with Obsidian, Ollama and ChromaDB: Offline Semantic Search for Your Notes

July 20, 2026

Keyword search fails when you need it most — 2 AM, 600 notes, and the answer is in there somewhere with a title you don't remember. This guide builds a fully offline personal AI knowledge base using Obsidian, Ollama, and ChromaDB so you can search your notes by meaning, not by exact wording, with no cloud dependency.

DevOps

Kube-green: Automatically Suspend Kubernetes Workloads After Hours to Cut Dev/Staging Cloud Costs

July 20, 2026

After watching a $847/month dev cluster bill for workloads idle 65% of the time, I set up kube-green — a Kubernetes operator that suspends Deployments and StatefulSets outside working hours. Six months later, monthly costs dropped to $290 with zero operational issues.

Programming

Mastering Zod in TypeScript: Schema Validation, Type Inference, and React Hook Form Integration

July 20, 2026

Zod fills the gap TypeScript can't close: runtime validation that stays in sync with your types automatically. This guide covers schema definition, type inference, React Hook Form integration, and sharing schemas across a full-stack TypeScript project.

Database

Stop Writing CRUD: Build a REST API Directly from PostgreSQL with PostgREST

July 20, 2026

Stop writing repetitive backend code. Learn how to use PostgREST to transform your PostgreSQL schema into a high-performance, secure REST API in minutes.

Deploying Flowise on Docker: Stop Coding Your AI Agents and Start Drawing Them

July 20, 2026

Ditch the 2 AM debugging sessions. Learn how to deploy Flowise on Docker to build complex AI agents and RAG workflows visually, cutting development time by up to 80%.

Programming

Why We Swapped Express for Fastify: A Six-Month Production Post-Mortem

July 20, 2026

Switching from Express to Fastify cut our latency by 30%. This production review covers the technical benefits of schema-first development and high-performance Node.js architecture.

Database

Mastering Database Replication Lag: Monitor, Diagnose, and Fix Sync Delays in PostgreSQL and MySQL

July 19, 2026

Database replication lag can silently corrupt your users' experience — orders appearing unpaid, inventory showing wrong counts. This guide covers how to monitor replication lag in PostgreSQL and MySQL, diagnose the root cause across network, disk, and query layers, and apply targeted fixes including parallel replication and WAL tuning.

Networking

Python Network Traffic Analysis with PyShark: Automated Anomaly Detection and Reporting

July 19, 2026

PyShark lets you capture and analyze network packets programmatically in Python — aggregating connection counts, detecting anomalies, and generating traffic reports automatically. This tutorial walks through building a real traffic analyzer, from live capture to post-incident pcap analysis, that replaces manual Wireshark filtering during production incidents.

Database

Sub-Second Analytics at Scale: A Hands-on Guide to Apache Druid

July 19, 2026

Build a high-performance real-time analytics system with Apache Druid. This guide covers everything from local setup and Kafka streaming to advanced OLAP tuning for sub-second queries.

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

PostgreSQL Job Queue with SKIP LOCKED and Advisory Locks: Background Tasks Without Redis or RabbitMQ

Build a Personal AI Knowledge Base with Obsidian, Ollama and ChromaDB: Offline Semantic Search for Your Notes

Mastering Zod in TypeScript: Schema Validation, Type Inference, and React Hook Form Integration

Stop Writing CRUD: Build a REST API Directly from PostgreSQL with PostgREST

Deploying Flowise on Docker: Stop Coding Your AI Agents and Start Drawing Them

Why We Swapped Express for Fastify: A Six-Month Production Post-Mortem

Mastering Database Replication Lag: Monitor, Diagnose, and Fix Sync Delays in PostgreSQL and MySQL

Python Network Traffic Analysis with PyShark: Automated Anomaly Detection and Reporting

Sub-Second Analytics at Scale: A Hands-on Guide to Apache Druid