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Development tutorial - IT technology blog

A Beginner’s Guide to CI/CD with GitHub Actions: Automation for Happier Devs

By admin March 9, 2026

Tired of manual deployments and unexpected bugs? This article provides a step-by-step guide to setting up a CI/CD pipeline with GitHub Actions, automating everything from testing to deployment to boost productivity and minimize errors.

Development

Complete Guide to Installing and Configuring Apache2 on Ubuntu 22.04

By admin March 8, 2026

Installing Apache2 on Ubuntu 22.04: virtual hosts, UFW, and SSL with Let's Encrypt. This is the workflow I actually run in production — not a copy from the docs.

Python

Python Automation for Daily Tasks: File Cleanup, Backups, and Automated Notifications

By admin March 8, 2026

Learn how to write Python scripts to automate 3 real-world daily tasks: organizing folders by file type, backing up MySQL with automatic rotation, and monitoring a directory with Telegram notifications. Includes practical lessons on performance when handling large files.

Security

Linux Server Security Audit with Lynis: From Installation to a Hardening Index of 80+

By admin March 8, 2026

Lynis runs directly inside your server and checks over 200 configuration points that remote scanners simply can't see. This guide walks through installation, interpreting results, and fixing real-world warnings — from SSH to kernel hardening — to push your hardening index from 55 up to 80+.

Docker

Docker Volumes: Persistent Data Storage That Survives Container Restarts

By admin March 8, 2026

Lost an entire database at 2 AM because I forgot to use Docker volumes — here's the hard-won lesson and a guide to configuring volumes correctly for production, including backup and monitoring.

Artificial Intelligence tutorial - IT technology blog

Whisper OpenAI: A Practical Guide to Speech-to-Text with Python

By admin March 8, 2026

After six months running Whisper in production, I compare three approaches — Whisper local, Whisper API, and faster-whisper — breaking down the pros and cons, walking through practical Python code, and covering how to handle common issues.

Database

Optimizing PostgreSQL Queries with EXPLAIN ANALYZE: Analyzing and Improving Query Performance

By admin March 8, 2026

Learn how to use EXPLAIN ANALYZE in PostgreSQL to read execution plans, analyze slow queries, and optimize performance with the right indexes. This guide goes from a 5-minute quick start to advanced techniques like covering indexes, composite indexes, and auto_explain.

What is MCP? Understanding Model Context Protocol and How to Integrate It into Your AI Project

By admin March 8, 2026

MCP (Model Context Protocol) is Anthropic's open standard that lets AI models connect directly to your file system, databases, and external tools. This article explains the 3-component architecture, walks through setup with Claude Desktop and the Python SDK, and covers practical security configuration and debugging.

Network

How to Set Up a Load Balancer with HAProxy on Linux

By admin March 8, 2026

A practical guide to configuring HAProxy as a load balancer: from installation and roundrobin/leastconn/source algorithms to HTTP health checks, SSL termination, and zero-downtime server draining. Tips drawn from real production experience.

Optimizing LLM API Costs: Prompt Caching, Batching, and Eliminating Unnecessary Tokens

By admin March 7, 2026

Skyrocketing LLM API bills usually come down to 3 causes: repeated system prompts, piecemeal requests, and wasted tokens in prompts. This article covers 3 practical techniques — prompt caching, batch processing, and prompt compression — to cut costs by 50–80%, with concrete Python code examples.

Advanced Docker Swarm: Rolling Updates, Placement Constraints, and Zero-Downtime Deployments

Hot Add CPU and RAM on VMware vSphere: Upgrade Virtual Machine Resources Without Rebooting

Docker-in-Docker (DinD) vs Docker-out-of-Docker (DooD): A Practical CI/CD Runner Setup Guide

Mastering /proc and /sys: Inspecting Linux Internals Without Third-Party Tools

Mastering DeepSeek-R1 on Linux: Optimizing “Home-Grown” Reasoning AI for Peak Performance

Dockerize WordPress: Accelerate Your MariaDB and Redis Cache Stack for Production

Automating File Monitoring with Python Watchdog: Stop Polling and Start Listening

Grafana Pyroscope: Hunting Down CPU and RAM “Hogs” Directly on Production

Mastering VMware Host Profiles: The Ultimate Way to Standardize ESXi Cluster Configurations

Varnish + Nginx: The Ultimate Lifesaver for High-Traffic Websites on Ubuntu

A Beginner’s Guide to CI/CD with GitHub Actions: Automation for Happier Devs

Complete Guide to Installing and Configuring Apache2 on Ubuntu 22.04

Python Automation for Daily Tasks: File Cleanup, Backups, and Automated Notifications

Linux Server Security Audit with Lynis: From Installation to a Hardening Index of 80+

Docker Volumes: Persistent Data Storage That Survives Container Restarts

Whisper OpenAI: A Practical Guide to Speech-to-Text with Python

Optimizing PostgreSQL Queries with EXPLAIN ANALYZE: Analyzing and Improving Query Performance

What is MCP? Understanding Model Context Protocol and How to Integrate It into Your AI Project

How to Set Up a Load Balancer with HAProxy on Linux

Optimizing LLM API Costs: Prompt Caching, Batching, and Eliminating Unnecessary Tokens