ITNotes - Page 4 of 142 - From Terminal to Cloud

High-Performance Linux VPN Setup with WireGuard: Point-to-Point, Split Tunneling, and Multi-Node Security

October 16, 2026

Eliminate VPN latency and gateway bottlenecks on Linux with WireGuard. Configure point-to-point tunnels, split tunneling, and firewall hardening with verified production benchmarks.

Networking

Deep-Dive Network Performance Testing with iPerf3 on Linux: TCP, UDP, and Bottleneck Diagnostics

October 16, 2026

A 10 Gbps link often crawls at sub-gigabit speeds because of misconfigured socket buffers, packet drops, or MTU mismatches. Learn how to isolate real network bottlenecks on Linux using advanced iPerf3 TCP and UDP profiling.

Building Modular AI Pipelines with Haystack 2.0: A Clean Alternative to LangChain for Production RAG

October 16, 2026

Tired of opaque framework abstractions breaking in production? Discover how Haystack 2.0 uses explicit modular component architecture to build reliable, maintainable RAG pipelines and agents in Python.

Programming

Build Ultra-Lightweight Desktop Apps with Tauri 2.0 and React: Replace Electron with Rust

October 16, 2026

Build lightweight, high-performance desktop apps using Tauri 2.0 and React. Master Rust IPC commands, stream real-time events, and slash binary sizes to under 15MB.

Programming

Zero-Allocation C# with Span and Memory: Practical Memory Optimization Tips

October 16, 2026

Eliminate GC pauses and maximize .NET performance using Span and Memory. Learn practical zero-allocation patterns to slice strings, arrays, and network buffers without heap overhead.

Crawl4AI and Python: Extracting Clean Markdown for LLMs and RAG Systems

October 16, 2026

Raw HTML wrecks RAG pipelines with token bloat and noise. Here is how to use Crawl4AI and Python to scrape dynamic pages into clean, structured Markdown while reducing embedding token usage by over 50%.

Database

Database Migration with Liquibase: Schema Versioning, Safe Rollbacks, and CI/CD Automation

October 16, 2026

Learn how to version and automate database migrations using Liquibase. This guide covers ChangeSet configuration, tracking mechanisms, safe rollbacks, and CI/CD pipelines.

Database

SQLite Performance Optimization: Production Guide to WAL Mode, PRAGMA Tuning, and Concurrency

October 16, 2026

Learn how to optimize SQLite for real-world production workloads by enabling WAL mode, fine-tuning memory PRAGMA settings, and eliminating concurrent database lock errors.

HomeLab

HomeLab Monitoring with Prometheus, Grafana, and Node Exporter on Docker: Metrics and Telegram Alerts

October 16, 2026

Build a self-hosted monitoring stack for your HomeLab using Prometheus, Grafana, and Node Exporter on Docker. Learn how to scrape host metrics and deliver automated Telegram alerts for hardware issues.

Security

Deploying ModSecurity and OWASP CRS on Nginx: Open-Source WAF Setup

October 15, 2026

Deploy ModSecurity v3 and OWASP CRS v4 on Nginx to block zero-day probes and OWASP Top 10 exploits. Includes dynamic module builds, anomaly scoring setup, and live verification.

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

High-Performance Linux VPN Setup with WireGuard: Point-to-Point, Split Tunneling, and Multi-Node Security

Deep-Dive Network Performance Testing with iPerf3 on Linux: TCP, UDP, and Bottleneck Diagnostics

Building Modular AI Pipelines with Haystack 2.0: A Clean Alternative to LangChain for Production RAG

Build Ultra-Lightweight Desktop Apps with Tauri 2.0 and React: Replace Electron with Rust

Zero-Allocation C# with Span and Memory: Practical Memory Optimization Tips

Crawl4AI and Python: Extracting Clean Markdown for LLMs and RAG Systems

Database Migration with Liquibase: Schema Versioning, Safe Rollbacks, and CI/CD Automation

SQLite Performance Optimization: Production Guide to WAL Mode, PRAGMA Tuning, and Concurrency

HomeLab Monitoring with Prometheus, Grafana, and Node Exporter on Docker: Metrics and Telegram Alerts

Deploying ModSecurity and OWASP CRS on Nginx: Open-Source WAF Setup