ITFROMZERO – Share tobe shared!

Building a Professional Network Lab with GNS3 on Ubuntu: Maximum Performance, Real-world Experience

By admin May 10, 2026

Don't let Windows VMs slow down your networking studies. Learn how to install GNS3 directly on Ubuntu, optimizing KVM and Docker for a high-performance professional network lab.

Git

Git Reset vs Git Revert: Safe Ways to “U-Turn” for Developers

By admin May 10, 2026

Accidentally committed buggy code? Don't panic. This guide explains how to differentiate between Git Reset and Git Revert to fix mistakes without disrupting your team.

Artificial Intelligence tutorial - IT technology blog

Docling: Breaking the PDF ‘Curse’ for RAG Systems – From Messy Data to Clean Markdown

By admin May 10, 2026

Complex PDF processing is often the biggest bottleneck in RAG. Discover how IBM's Docling uses AI to understand layouts and convert PDFs into accurate Markdown, helping LLMs understand data deeply and provide smarter answers.

PydanticAI: The Secret to Building Robust, Type-Safe AI Agents

By admin May 10, 2026

Stop struggling with LLM JSON parsing errors. Learn to use PydanticAI for building AI Agents with strict, production-ready data structures.

Database

ScyllaDB: Revolutionizing Write-Heavy System Performance as a Cassandra Alternative

By admin May 10, 2026

Tired of Cassandra's latency? ScyllaDB is a high-speed C++ rewrite that eliminates Garbage Collection overhead to achieve maximum write performance. Explore our setup and optimization guide.

Fedora

Turn Fedora Server into a Pro Router: Optimizing NFTables and Kea DHCP

By admin May 10, 2026

A guide on turning Fedora Server into a professional router. Use NFTables for high-speed firewalling and Kea DHCP for modern local network management.

Database

DuckDB: SQLite for Analytics – Master the Art of Processing Tens of GBs Smoothly on Your Laptop

By admin May 10, 2026

Discover DuckDB – the perfect alternative to Pandas for large-scale data processing on local machines. Learn how to query massive CSV/Parquet files directly and pick up practical performance optimization tips.

Python

uv: The Blazing Fast Python Package Manager – Goodbye Pip and Poetry?

By admin May 10, 2026

uv is a Rust-based Python package manager with extraordinary speed. Discover how uv serves as a perfect replacement for pip, poetry, and pyenv in Python project management.

Development

Build “Surreal” Desktop Apps: How Tauri and React Ended Electron’s RAM Nightmare

By admin May 10, 2026

Forget about desktop apps consuming gigabytes of RAM. Discover how to combine Tauri, React, and Rust to build ultra-lightweight, high-performance, and secure applications.

Database

Sysbench: How to Measure Real-World Load for MySQL and PostgreSQL (Not Just Theory)

By admin May 10, 2026

A detailed guide on using sysbench to benchmark MySQL and PostgreSQL performance through three stages: Prepare, Run, and Cleanup. Learn how to interpret TPS and Latency metrics to identify database bottlenecks.

Effortless KVM Management with Cockpit-machines: Say Goodbye to Bulky Virt-manager

Stop “Sneaky” Connections on Linux with OpenSnitch: A Powerful Application-Level Firewall

DNF History: The ‘Time Machine’ for Risk-Free Fedora System Tweaking

RBAC on VMware vCenter: Don’t Let Junior Admins Hold the “Life and Death” Power

Bringing Claude Code to CI/CD: Hands-Free Code Reviews and Automated Testing

SPF, DKIM, and DMARC: The ‘Atomic Trio’ for 100% Email Inbox Delivery

24/7 Internet Bandwidth Monitoring: Holding Your ISP Accountable with Prometheus and Grafana

AI Agent for Server Log Monitoring: From On-call Nightmares to Smart Telegram Alerts

Teleport: How I Managed 50+ Servers and K8s Without Using a Single SSH Key

Mastering lsof on Linux: Pro Tips for Finding Processes Occupying Ports and Fixing ‘Too Many Open Files’ Errors

Building a Professional Network Lab with GNS3 on Ubuntu: Maximum Performance, Real-world Experience

Git Reset vs Git Revert: Safe Ways to “U-Turn” for Developers

Docling: Breaking the PDF ‘Curse’ for RAG Systems – From Messy Data to Clean Markdown

PydanticAI: The Secret to Building Robust, Type-Safe AI Agents

ScyllaDB: Revolutionizing Write-Heavy System Performance as a Cassandra Alternative

Turn Fedora Server into a Pro Router: Optimizing NFTables and Kea DHCP

DuckDB: SQLite for Analytics – Master the Art of Processing Tens of GBs Smoothly on Your Laptop

uv: The Blazing Fast Python Package Manager – Goodbye Pip and Poetry?

Build “Surreal” Desktop Apps: How Tauri and React Ended Electron’s RAM Nightmare

Sysbench: How to Measure Real-World Load for MySQL and PostgreSQL (Not Just Theory)