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How to Use strace to Debug Applications on Linux: Tracing System Calls and Finding Root Causes Effectively

By admin April 28, 2026

strace lets you trace every system call a process makes on Linux — from file opens and network connections to lock waits — without needing source code or recompiling. This guide covers practical strace usage for debugging permission errors, missing files, hanging services, and I/O bottlenecks.

Docker

Distroless Docker Images: Remove Unnecessary Shell and OS to Harden Container Security

By admin April 28, 2026

Google's Distroless Images strip the shell, package manager, and unnecessary OS components from Docker containers — significantly reducing the attack surface. This guide covers how to use multi-stage builds with Distroless for Go, Python, and Java, along with real-world vulnerability comparison and testing techniques.

Docker

Docker Compose Profiles: Managing Optional Services by Environment — Debug and Monitoring Completely Isolated

By admin April 28, 2026

Docker Compose Profiles lets you isolate debug and monitoring tools from your core services within a single docker-compose.yml file. This article shares practical lessons from six months of production use, with concrete examples for local, staging, and production environments.

Database

Getting Started with ClickHouse: A High-Performance OLAP Database for Large-Scale Analytics

By admin April 28, 2026

ClickHouse is a columnar OLAP database that lets you analyze hundreds of millions of rows in seconds. This guide covers installation on Linux, choosing the right table engine, importing real-world data, and production deployment tips for DevOps teams.

VMware

Diagnosing VMware ESXi with esxtop: A Practical Troubleshooting Field Guide

By admin April 28, 2026

Stop guessing and start diagnosing. Use esxtop to accurately identify CPU Ready, RAM Swap, and Disk Latency bottlenecks on VMware ESXi like a seasoned systems engineer.

Development

Farewell Webpack: How I ‘Hacked’ Project Build Speed 10x with Vite

By admin April 28, 2026

Vite is a next-generation build tool that accelerates Frontend development up to 10x compared to Webpack. A detailed guide on configuring aliases, proxies, and optimizing bundles.

Database

PostgreSQL FDW: The Ultimate Trick to Query MySQL, MongoDB, and CSV Directly Without ETL

By admin April 28, 2026

Forget complex ETL! A detailed guide on using PostgreSQL FDW to query MySQL, MongoDB, and CSV directly. Speed up multi-source data processing with just a few SQL lines.

Virtualization

Build Your Own Pro VDI System with Proxmox and Apache Guacamole: Smooth Remote Desktop via Browser

By admin April 28, 2026

Learn how to build a professional personal VDI system. Use Proxmox VE and Apache Guacamole for smooth access to Windows/Linux VMs via a web browser, optimized for speed and security.

MySQL

MySQL GTID Replication Setup Guide: Advanced Data Synchronization and Automatic Failover

By admin April 27, 2026

A step-by-step guide to configuring MySQL GTID Replication on Ubuntu: set up Master and Slave, verify data synchronization, and handle automatic failover without manually tracking binlog positions.

Security

Nginx GeoIP Blocking: How I Cut 80% of Junk Traffic from Unknown Countries

By admin April 27, 2026

Blocking IPs by country using Nginx and MaxMind GeoLite2 is the most effective way to eliminate 80% of botnet junk traffic. See this detailed configuration guide drawn from real-world experience.

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

How to Use strace to Debug Applications on Linux: Tracing System Calls and Finding Root Causes Effectively

Distroless Docker Images: Remove Unnecessary Shell and OS to Harden Container Security

Docker Compose Profiles: Managing Optional Services by Environment — Debug and Monitoring Completely Isolated

Getting Started with ClickHouse: A High-Performance OLAP Database for Large-Scale Analytics

Diagnosing VMware ESXi with esxtop: A Practical Troubleshooting Field Guide

Farewell Webpack: How I ‘Hacked’ Project Build Speed 10x with Vite

PostgreSQL FDW: The Ultimate Trick to Query MySQL, MongoDB, and CSV Directly Without ETL

Build Your Own Pro VDI System with Proxmox and Apache Guacamole: Smooth Remote Desktop via Browser

MySQL GTID Replication Setup Guide: Advanced Data Synchronization and Automatic Failover

Nginx GeoIP Blocking: How I Cut 80% of Junk Traffic from Unknown Countries