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Virtualization tutorial - IT technology blog

Migrating a Linux Server to KVM: Using virt-p2v Instead of VMware Converter

By IT From Zero August 19, 2026

A detailed guide on using virt-p2v to migrate physical Linux servers to KVM. A stable, free, and production-ready P2V solution that's a perfect replacement for VMware Converter.

MySQL

Squeezing Every Drop of NVMe Performance for MySQL: From innodb_io_capacity to Kernel Tuning

By IT From Zero August 19, 2026

Don't let your NVMe drive run like a turtle with default settings. A detailed guide on tuning innodb_io_capacity, O_DIRECT, and the Kernel to optimize MySQL IOPS.

MySQL

MySQL SQL Mode: A Shield Against Junk Data and Silent Logic Errors

By IT From Zero August 18, 2026

Stop MySQL from silently truncating your data. Learn how to configure SQL Mode to enable Strict Mode, prevent silent logic errors, and protect your system's data integrity.

Monitoring

Mastering OpenAI/Claude Costs and Rate Limits with Prometheus & Grafana

By IT From Zero August 18, 2026

Don't let API bills surprise you. Here's a detailed guide on using Prometheus and Grafana to monitor OpenAI/Claude rate limits and costs in real-time.

Database

Mastering Redis OM: When Redis Becomes More Than Just a Caching Layer

By IT From Zero August 18, 2026

Redis OM helps you manage complex JSON data and perform Full-text search on Redis with lightning speed. Detailed guide for Python and Node.js.

Python

Mastering PySpark on Linux: Processing Hundreds of GBs of Data with Python

By IT From Zero August 18, 2026

Struggling to process tens of gigabytes of data with Pandas? Discover how to install and optimize PySpark on Linux to handle Big Data efficiently through parallel computing.

Python

Building High-Performance GraphQL APIs with Python and Strawberry

By IT From Zero August 18, 2026

Build high-performance GraphQL APIs with Python, Strawberry, and FastAPI. A detailed guide on using DataLoader to optimize speed and reduce latency from seconds to milliseconds.

Linux

Mastering Bad Sector Data Recovery with GNU ddrescue on Linux

By IT From Zero August 18, 2026

Don't lose data just by using the wrong copy command. Learn how to use GNU ddrescue to recover data from bad sector hard drives professionally and safely.

Development

Mastering TanStack Table v8: Building High-Quality Data Tables Effortlessly

By IT From Zero August 18, 2026

Learn how to build professional data table systems in React with TanStack Table v8. A detailed guide on Sorting, Filtering, and Pagination based on real-world experience.

Development

Clinic.js: Diagnosing Memory Leaks and Event Loop Lag in Node.js

By IT From Zero August 18, 2026

Explore the Clinic.js toolkit to diagnose memory leaks, event loop lag, and optimize Node.js performance through real-world examples from production environments.

Monitoring Argo CD Application Sync and Health Status with Prometheus and Grafana

Installing and Using Portkey AI Gateway: Rate Limiting, Load Balancing, and Multi-LLM Observability

How to Install and Configure nftables on Linux: A Complete iptables Replacement

Optimizing KVM Networking with virtio-net Multiqueue and vhost-net: Hitting Full 10GbE Without CPU Bottlenecks

How to Deploy Umami Analytics with Docker Compose and PostgreSQL: Self-Host a Lightweight GA4 Alternative

How to Back Up SQLite to S3 with Litestream: Real-Time Production Backups

Guide to Using Tart on macOS Apple Silicon: Create and Manage CLI Virtual Machines for CI/CD

Installing and Configuring Auditd on Ubuntu Server: Tracing User Actions Down to the Kernel Level

How to Use git-credential-oauth: Log in to GitHub and GitLab in Terminal via Browser

How to Enable Virtualization-Based Security (VBS) and Credential Guard on VMware vSphere

Migrating a Linux Server to KVM: Using virt-p2v Instead of VMware Converter

Squeezing Every Drop of NVMe Performance for MySQL: From innodb_io_capacity to Kernel Tuning

MySQL SQL Mode: A Shield Against Junk Data and Silent Logic Errors

Mastering OpenAI/Claude Costs and Rate Limits with Prometheus & Grafana

Mastering Redis OM: When Redis Becomes More Than Just a Caching Layer

Mastering PySpark on Linux: Processing Hundreds of GBs of Data with Python

Building High-Performance GraphQL APIs with Python and Strawberry

Mastering Bad Sector Data Recovery with GNU ddrescue on Linux

Mastering TanStack Table v8: Building High-Quality Data Tables Effortlessly

Clinic.js: Diagnosing Memory Leaks and Event Loop Lag in Node.js