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Dask Python: Processing Big Data Beyond RAM with Parallel Computing — Real-World Tips

By admin June 26, 2026

A practical guide to using Dask in Python for processing datasets larger than RAM through parallel computing. Covers installation, DataFrame/Array configuration, partition optimization, and performance monitoring via the Dask Dashboard.

VMware

How to Configure VMware vSphere DPM: Automatically Power ESXi Hosts On/Off to Save Datacenter Energy

By admin June 26, 2026

VMware vSphere DPM automatically migrates VMs and shuts down unnecessary ESXi hosts when cluster load is low, then powers them back on via Wake-on-LAN or IPMI when needed — saving 30–50% of datacenter power consumption. This guide walks through configuring DPM step by step via vSphere Client and PowerCLI, including monitoring and practical tips for production deployments.

Python

What is Cython? A Guide to Compiling Python to C for 10-150x Speed Gains

By admin June 26, 2026

Cython lets you compile Python modules into C extensions, delivering 10–150x speedups for compute-heavy workloads while keeping familiar Python syntax. This article compares popular Python performance approaches and walks through a complete Cython implementation with real benchmarks.

Artificial Intelligence tutorial - IT technology blog

Automatically Generate Python Unit Tests with AI: A Practical Guide to Pynguin and CodiumAI for Higher Coverage

By admin June 26, 2026

A practical guide to using Pynguin and CodiumAI to automatically generate unit tests from existing Python code, pushing coverage above 80% without writing each test case by hand. Covers a real-world workflow, how to combine both tools, and key considerations before committing AI-generated tests.

Virtualization

Managing KVM via Web with Kimchi and Wok: Lightweight, Smooth, and a True Virt-manager Alternative

By admin June 26, 2026

Forget Virt-manager! A detailed guide to installing Kimchi and Wok to manage KVM virtual machines directly from your browser — lightweight, smooth, and perfect for Linux servers.

Linux

Linux Compression and Extraction: Don’t Let Your Server Hang by Choosing the Wrong Format

By admin June 25, 2026

Discover how to use tar, gzip, xz, and zstd to optimize Linux server storage. This article provides practical comparisons and tips for monitoring large file compression progress.

Monitoring

Monitor Directory Sizes with Prometheus Folder Exporter: Don’t Wait for a Full Disk to Panic

By admin June 25, 2026

Stop SSHing into servers at 2 AM to find bloated log files. Use Prometheus Folder Exporter to monitor directory sizes and get early alerts.

Network

Scapy: The ‘Heavy Weapon’ for Network Troubleshooting on Linux

By admin June 25, 2026

Don't let basic networking tools limit your debugging capabilities. Learn how to use Scapy to craft custom packets, bypass firewalls, and diagnose the most subtle network issues.

A Guide to Automated LLM Unit Testing with DeepEval

By admin June 25, 2026

DeepEval lets you write unit tests for LLM applications just like regular pytest, with metrics for AnswerRelevancy, Faithfulness, and hallucination detection. A guide from a 5-minute install to CI/CD integration for automatically controlling AI quality before every deployment.

VMware

VMware vSphere Tags and Custom Attributes Guide: Efficiently Classify and Manage Hundreds of Virtual Machines

By admin June 25, 2026

VMware vSphere Tags and Custom Attributes let you classify and search hundreds of VMs across multiple dimensions simultaneously — something VM names and folders alone simply can't do. This guide covers practical setup and usage with PowerCLI, drawn from hands-on experience managing an 8-host ESXi cluster.

Netdisco: Effortless Network Topology Automation and Switch Port Management

Snapshot Testing with Pytest-snapshot: Stop Struggling with Manual Assertions

Say Goodbye to Passwords: Implementing Magic Links with Node.js and Nodemailer

Securing Python Source Code with PyArmor: Effectively Preventing Reverse Engineering and Protecting Intellectual Property

Feature-Sliced Design (FSD): A ‘Divide and Conquer’ Solution for Large-Scale React Projects

Building Professional CLIs with Node.js and Oclif: From Fragmented Scripts to Standardized Tools

Implementing Circuit Breaker in Python: Don’t Let a Faulty API Crash Your Entire System

Deploying FastNetMon: A Lightweight DDoS Detection Solution via NetFlow/sFlow

3 Pro GraphQL Security Tips: Don’t Hand Hackers the Keys to Your Kingdom

Securing Sudo with 2FA: The Final Defense Against Root Hijacking

Dask Python: Processing Big Data Beyond RAM with Parallel Computing — Real-World Tips

How to Configure VMware vSphere DPM: Automatically Power ESXi Hosts On/Off to Save Datacenter Energy

What is Cython? A Guide to Compiling Python to C for 10-150x Speed Gains

Automatically Generate Python Unit Tests with AI: A Practical Guide to Pynguin and CodiumAI for Higher Coverage

Managing KVM via Web with Kimchi and Wok: Lightweight, Smooth, and a True Virt-manager Alternative

Linux Compression and Extraction: Don’t Let Your Server Hang by Choosing the Wrong Format

Monitor Directory Sizes with Prometheus Folder Exporter: Don’t Wait for a Full Disk to Panic

Scapy: The ‘Heavy Weapon’ for Network Troubleshooting on Linux

A Guide to Automated LLM Unit Testing with DeepEval

VMware vSphere Tags and Custom Attributes Guide: Efficiently Classify and Manage Hundreds of Virtual Machines