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Development tutorial - IT technology blog

Quick Tips for Efficient Online JSON Formatting and Validation Without Installation

By admin March 16, 2026

JSON is an essential data format in modern IT development. This article guides you on how to effectively format and validate JSON online, saving time and improving data accuracy, especially when working with APIs or system configurations.

Virtualization

Installing and Configuring Hyper-V on Windows Server 2022: Best Practices for Enterprise Virtual Machine Management

By admin March 16, 2026

This article provides a detailed guide on how to install and configure Hyper-V on Windows Server 2022. With practical tips and real-world experience, you will easily manage virtual machines effectively in an enterprise environment.

Artificial Intelligence tutorial - IT technology blog

Guide to Deploying LLM Inference with vLLM on Linux: Boosting Throughput and Saving VRAM

By admin March 16, 2026

This article shares practical experience deploying LLM inference with vLLM on Linux, aiming to boost throughput and save VRAM. It provides detailed guidance from installation, configuring important parameters, to testing and monitoring performance, helping you optimize your system.

Docker

Monitor Docker Container Resources with `docker stats` and cAdvisor: Identify CPU, RAM Hogs

By admin March 16, 2026

Optimizing Docker application performance is an essential skill. This article provides detailed guidance on using `docker stats` and cAdvisor to monitor container CPU and RAM, helping you effectively identify and resolve performance issues.

Development

Build an Auto-Deploy Webhook: No More SSH at 2 AM

By admin March 16, 2026

A practical guide to building a Python Flask webhook server that automatically deploys when you push code to GitHub. From writing the script and configuring systemd to connecting with GitHub Webhooks — set it up once, use it forever.

Fedora

Fedora Silverblue: Installation and System Management with rpm-ostree and Toolbox

By admin March 16, 2026

Fedora Silverblue uses OSTree to create an immutable operating system — safe updates and instant rollbacks when something goes wrong. Combined with Toolbox, you get a clean dev environment completely isolated from the host. This article shares practical installation and usage tips from 6 months of real-world experience.

Python

Processing CSV and Excel Files with Python pandas: Comparing Approaches and Practical Implementation Guide

By admin March 16, 2026

Compare three approaches for handling CSV and Excel files with Python: the csv module, pandas, and openpyxl — analyzing trade-offs and guidance on choosing the right tool for each scenario, with real-world examples from an automation project.

Fedora

Using Btrfs Snapshots on Fedora: Fast System Backup and Rollback

By admin March 16, 2026

Btrfs snapshots let you back up and roll back your entire Fedora system in under a second using Copy-on-Write. This guide covers creating snapshots manually, automating them with Snapper and the DNF plugin, and the fast rollback process when something breaks after an upgrade.

Development

Introduction to Infrastructure as Code: A Guide to Automating AWS Infrastructure with Terraform

By admin March 15, 2026

After 6 months running Terraform in production, I walk through the entire journey — from realizing ClickOps was a problem, to installation, writing configs, and safely managing state files with an S3 backend. This article focuses on real-world lessons, not theory.

Network

Free Online Network Tools for SysAdmins: Subnet Calculator, DNS Lookup, IP Converter

By admin March 15, 2026

Free online network tools I keep bookmarked for emergency troubleshooting: Subnet Calculator for CIDR/overlap, DNS Lookup for propagation checks, IP Converter for cross-platform configs — all run directly in the browser, no installation needed.