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BDD with Python & Behave Tutorial: Making Code and Business “Speak the Same Language”

By IT From Zero July 31, 2026

Learn how to implement BDD testing with Python and the Behave library. This guide covers everything from writing standard Gherkin to practical automation test optimization tips for developers.

MySQL

Is MySQL COUNT(*) Slow? Don’t Let Your Dashboard Freeze When Data Hits Millions of Rows

By IT From Zero July 30, 2026

Why does MySQL COUNT(*) slow down on large InnoDB datasets? This article analyzes the impact of MVCC and provides 4 optimization techniques using Counter Tables, Metadata, and Redis.

VMware

How to Get VMware Workstation Pro for Free: A Solution for Upgrading from the Player Version

By IT From Zero July 30, 2026

Broadcom has made VMware Workstation Pro free for personal users. Check out this guide on how to register and download the official license to replace the limited Player version.

MySQL

MySQL Hash Join: A Lifesaver for Queries Lacking Indexes on MySQL 8.0.18+

By IT From Zero July 30, 2026

What is MySQL Hash Join? Learn how it works, how to configure join_buffer_size, and practical tips to significantly speed up JOIN queries lacking indexes.

Development

Building Multi-Model AI Streaming Chat with Vercel AI SDK and Next.js

By IT From Zero July 30, 2026

A detailed guide on building a multi-model AI streaming chat application (OpenAI, Claude, Gemini) using Vercel AI SDK and Next.js. The optimal solution for modern developers.

Database

Redis Insight: The Visual Lifesaver for Debugging and Optimizing Redis from A-Z

By IT From Zero July 30, 2026

Discover how to use Redis Insight to monitor performance, analyze RAM, and visually debug data. The ultimate CLI alternative for developers.

Security

Snort 3 Installation Guide on Ubuntu: A Comprehensive IDS/IPS Shield for Your Server

By IT From Zero July 30, 2026

A detailed guide on installing Snort 3 on Ubuntu from source code. Optimize IDS/IPS performance with multi-threaded architecture to protect your server from modern cyber attacks.

Security

Deploying Zero Trust Mesh VPN with NetBird: How I Protected My Server from 50,000 Brute-force Attacks Nightly

By IT From Zero July 30, 2026

A guide to building a Zero Trust Mesh VPN with NetBird on Linux. A modern alternative to traditional VPNs for securing SSH and connecting servers safely without port forwarding.

Fedora

Blocking Unauthorized Software on Fedora Server with fapolicyd: A Whitelisting Approach

By IT From Zero July 29, 2026

Enhance Fedora Server security with fapolicyd. A detailed guide on setting up Application Whitelisting to prevent unauthorized scripts and software execution.

Artificial Intelligence tutorial - IT technology blog

LanceDB: The ‘SQLite’ of Vector Databases – A Lightweight Storage Solution for AI Applications

By IT From Zero July 29, 2026

LanceDB is a lightweight embedded vector database that functions like SQLite but for AI. Learn how to install and optimize Vector Search for your RAG applications.

Configuring BFD with FRRouting on Linux: Sub-Second Link Failure Detection for OSPF and BGP

Clean Up Stale Remote-Tracking Branches with git remote prune and git fetch –prune

Implementing Single Sign-On (SSO) with Keycloak and Next.js: A Complete OpenID Connect (OIDC) Guide

Enable MySQL Slow Query Log and Use pt-query-digest to Find Database Bottlenecks

MetaGPT with Python Guide: Automate Software Development with Multi-Agent Systems

Configuring SR-IOV on KVM/Proxmox: Share 10GbE NICs with Near Bare-Metal Performance

Docker Autoheal Guide: Automatically Restart Unhealthy Containers

APScheduler in Python: Production-Ready Background Job Scheduling for Backend

How to Reclaim Storage Space (Space Reclamation / UNMAP) on VMware ESXi

How to Use Bitnami Sealed Secrets on Kubernetes: Secure GitOps Secrets Management

BDD with Python & Behave Tutorial: Making Code and Business “Speak the Same Language”

Is MySQL COUNT(*) Slow? Don’t Let Your Dashboard Freeze When Data Hits Millions of Rows

How to Get VMware Workstation Pro for Free: A Solution for Upgrading from the Player Version

MySQL Hash Join: A Lifesaver for Queries Lacking Indexes on MySQL 8.0.18+

Building Multi-Model AI Streaming Chat with Vercel AI SDK and Next.js

Redis Insight: The Visual Lifesaver for Debugging and Optimizing Redis from A-Z

Snort 3 Installation Guide on Ubuntu: A Comprehensive IDS/IPS Shield for Your Server

Deploying Zero Trust Mesh VPN with NetBird: How I Protected My Server from 50,000 Brute-force Attacks Nightly

Blocking Unauthorized Software on Fedora Server with fapolicyd: A Whitelisting Approach

LanceDB: The ‘SQLite’ of Vector Databases – A Lightweight Storage Solution for AI Applications