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Optimizing zRAM on Fedora: How to ‘Expand’ Your RAM for a Smooth, Lag-Free Experience

By admin April 11, 2026

Is Fedora lagging with too many tabs open? Discover how to optimize zRAM using zram-generator and zstd to expand your memory and boost system smoothness by over 30%.

Docker

Docker Resource Limits: Don’t Let One Container Crash Your Entire Server

By admin April 11, 2026

Configuring Docker Resource Limits is a must for professional DevOps. Learn how to limit CPU, RAM, and Disk I/O to prevent server hangs and optimize infrastructure costs.

Artificial Intelligence tutorial - IT technology blog

IT Automation: Don’t Just ‘Chat’ with AI, Turn It Into a Real Agent

By admin April 11, 2026

No more manual log monitoring! Discover how to combine Python scripts with AI APIs to automatically detect, analyze, and suggest server fixes in seconds.

Monitoring

VictoriaMetrics Installation Guide: A Prometheus Alternative Saving 90% Disk Space

By admin April 10, 2026

A detailed guide on installing VictoriaMetrics as a Prometheus alternative. Save 90% disk space, reduce RAM usage, and boost query speeds for large-scale monitoring systems.

Python

Mastering unittest.mock: Don’t Let ‘Dead’ APIs Break Your Unit Tests

By admin April 10, 2026

Discover the power of unittest.mock in Python. Learn to mock APIs, databases, and handle system errors to make your Unit Tests faster, more stable, and professional.

Database

Replacing RabbitMQ with Redis Streams: Building a ‘Lightweight yet Powerful’ Message Queue for Real-time Systems

By admin April 10, 2026

Redis Streams is the ideal RabbitMQ alternative for small to medium projects. Learn to build a reliable Message Queue with Consumer Groups and ACK for smooth real-time event processing.

Security

Mastering SOPS for Secret Encryption: Stop API Key Leaks on Git

By admin April 10, 2026

Stop leaking API keys on Git! Here is a detailed guide on using Mozilla SOPS to encrypt secrets in YAML/JSON files with PGP. The ultimate security solution for Devs and DevOps.

Virtualization

Proxmox HA: The Ultimate System Rescue at 2 AM Without Leaving Your Bed

By admin April 10, 2026

A hands-on guide to configuring Proxmox VE Cluster and High Availability (HA). This solution enables automatic VM recovery during physical server failures, ensuring maximum uptime for businesses.

VMware

Mastering VMware Backup and Restore: Better Safe Than Sorry

By admin April 10, 2026

Learn how to build a robust 3-2-1 VMware backup strategy. This guide clarifies the difference between Snapshots and Backups, and covers using Veeam and GhettoVCB for total data protection.

Linux

Escape ‘Dependency Hell’ on Linux with Nix: The Package Manager That Saved Me at 2 AM

By admin April 10, 2026

Nix Package Manager is a lifesaver for isolating software, supporting instant rollbacks, and completely eliminating library conflict errors on Linux. This guide provides practical installation and usage tips for DevOps and Sysadmins.

Monitor MySQL Performance with Performance Schema and sys Schema: Find Bottlenecks Fast

Building a News Website with Django: A Step-by-Step Guide for Beginners

Structuring the .claude/ Directory for Claude Code Projects: From Small to Large

OOM Killer: Why Linux Kills Your MySQL and How to Protect It

VMware Aria Operations Deployment Guide: A Lifesaver for vSphere Administrators

MySQL: Don’t Let utf8 Deceive You – The Ultimate Guide to Fixing Emojis and Font Issues with utf8mb4

Incus on Ubuntu: Installation Guide and Upgrading from LXD

Linux ACL: How to Set ‘Ultra-Detailed’ Permissions for Each User (Replacing chmod 777)

Mastering HashiCorp Packer: Automating Proxmox and VMware VM Template Creation

Stop Installing Terraform and Ansible Directly: Use Docker CLI to Keep Your Host Clean

Optimizing zRAM on Fedora: How to ‘Expand’ Your RAM for a Smooth, Lag-Free Experience

Docker Resource Limits: Don’t Let One Container Crash Your Entire Server

IT Automation: Don’t Just ‘Chat’ with AI, Turn It Into a Real Agent

VictoriaMetrics Installation Guide: A Prometheus Alternative Saving 90% Disk Space

Mastering unittest.mock: Don’t Let ‘Dead’ APIs Break Your Unit Tests

Replacing RabbitMQ with Redis Streams: Building a ‘Lightweight yet Powerful’ Message Queue for Real-time Systems

Mastering SOPS for Secret Encryption: Stop API Key Leaks on Git

Proxmox HA: The Ultimate System Rescue at 2 AM Without Leaving Your Bed

Mastering VMware Backup and Restore: Better Safe Than Sorry

Escape ‘Dependency Hell’ on Linux with Nix: The Package Manager That Saved Me at 2 AM