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Real-time PostgreSQL Monitoring with pg_activity: Kill Hung Queries in a Flash

By admin August 14, 2026

Don't let slow queries crash your server. Learn how to use pg_activity on Linux for real-time PostgreSQL monitoring, detecting idle in transactions, and handling hung queries quickly.

Artificial Intelligence tutorial - IT technology blog

Automating LLM-as-a-Judge with GitHub Actions: Stopping AI Errors Before Deployment

By admin August 13, 2026

Don't let your AI application hallucinate in production. Learn how to implement an automated LLM-as-a-Judge workflow with GitHub Actions for effective AI quality control.

Network

Termshark: Wireshark-style Packet Analysis Directly on the Linux Terminal

By admin August 13, 2026

Forget about downloading pcap files. With Termshark, you can analyze packets with a Wireshark-like interface directly on your Linux Terminal via SSH.

Virtualization

Proxmox SDN & EVPN: The Ultimate Trick to Extend Layer 2 Networks Across Datacenters

By admin August 13, 2026

A detailed guide on configuring Proxmox SDN with EVPN to extend Layer 2 networks across datacenters. Keep VM IPs consistent across sites without expensive hardware.

Centos

Rescuing CentOS Stream 9: Using Rescue Mode and Chroot to Fix GRUB Errors

By admin August 13, 2026

CentOS Stream 9 server won't boot? Don't worry. This guide will help you use Rescue Mode and Chroot to fix GRUB errors and restore your system in just a few steps.

Building MCP Servers at Warp Speed with FastMCP: Connecting AI to Internal Data using Python

By admin August 13, 2026

Forget about tedious boilerplate code. FastMCP helps you build Python-based MCP Servers lightning-fast, connecting AI to internal data in just minutes.

Security

Guide to Installing DefectDojo on Docker: Centralized Vulnerability Management for DevSecOps

By admin August 13, 2026

Vulnerability management is no longer a headache with DefectDojo on Docker. Detailed guide on installation, importing scan results, and API automation for DevSecOps.

VMware

Mastering ESXi Firewall with esxcli: From Manual Administration to Automation

By admin August 13, 2026

Managing ESXi Firewall via GUI is slow and error-prone. Learn to use esxcli to open ports, block IPs, and professionally automate VMware host security.

Python

Build Your Own Server Monitoring System with Python and Discord Webhook

By admin August 13, 2026

Don't wait for your server to crash to find out. Learn to write a Python script to monitor CPU, RAM, and Disk with Discord alerts in just 15 minutes.

Development

Handling 100,000 Rows of Data Smoothly in React with react-window

By admin August 12, 2026

Learn how to handle lists with thousands of rows in React without browser lag. A guide to using react-window to optimize DOM nodes and boost rendering speed.

Repository Rescue: Mastering git fsck to Recover Code and Fix Data Errors

Optimize Windows Virtual Machines to Run ‘Silky Smooth’ with VMware OS Optimization Tool (OSOT)

Installing Pyrra: Managing SLOs and Alerts the Google SRE Way

Installing Woodpecker CI on Fedora Server: A Lightweight CI/CD Solution for Gitea

Configuring Docker daemon.json: Prevent Disk Full Errors and Production Server Crashes

Python lxml: The ‘Heavy Weapon’ for Processing XML/HTML in Legacy Systems

Mastering NetworkManager Dispatcher: Automate ‘Everything’ When Changing Networks on Linux

Configuring DNS Split-Horizon with BIND9: The IP “Splitting” Trick for LAN and Internet

Building Background Jobs for Next.js: Say Goodbye to Redis, Welcome Inngest

mysqlslap: How I “Torture” MySQL to Find Real-World Load Limits

Real-time PostgreSQL Monitoring with pg_activity: Kill Hung Queries in a Flash

Automating LLM-as-a-Judge with GitHub Actions: Stopping AI Errors Before Deployment

Termshark: Wireshark-style Packet Analysis Directly on the Linux Terminal

Proxmox SDN & EVPN: The Ultimate Trick to Extend Layer 2 Networks Across Datacenters

Rescuing CentOS Stream 9: Using Rescue Mode and Chroot to Fix GRUB Errors

Building MCP Servers at Warp Speed with FastMCP: Connecting AI to Internal Data using Python

Guide to Installing DefectDojo on Docker: Centralized Vulnerability Management for DevSecOps

Mastering ESXi Firewall with esxcli: From Manual Administration to Automation

Build Your Own Server Monitoring System with Python and Discord Webhook

Handling 100,000 Rows of Data Smoothly in React with react-window