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Building a Real-time Notification System with Node.js and Redis Pub/Sub: Rescuing the Database at 2 AM

By admin May 19, 2026

Is your notification system overwhelming your database? Learn how to build a robust real-time architecture with Node.js and Redis Pub/Sub for superior performance.

Monitoring

Prometheus Process Exporter Guide: Detailed Monitoring of Linux Process Health

By admin May 19, 2026

A detailed guide on installing Prometheus Process Exporter to monitor CPU, RAM, and I/O of individual Linux processes, helping you pinpoint the exact cause of system overloads.

Development

Mastering Load Testing with k6: From Simple Scripts to CI/CD Automation

By admin May 19, 2026

A professional guide to REST API performance testing with k6. Sharing practical insights on stages, thresholds, and CI/CD integration to keep systems stable under heavy load.

Security

SBOM: The “X-Ray” for Dependency Analysis and Vulnerability Scanning with Syft & Grype

By admin May 19, 2026

Learn how to use Syft and Grype for dependency analysis and automated vulnerability scanning. Secure your software supply chain with SBOM – a modern security standard for SREs and DevSecOps.

MySQL

Professional Database Monitoring with MySQL Audit Log Plugin

By admin May 19, 2026

A detailed guide on installing and optimizing the Percona MySQL Audit Log Plugin. This solution tracks all user actions, protects sensitive data, and meets security standards for production systems.

Fedora

Seamlessly Replacing Fedora Packages with dnf swap and dnf shell

By admin May 19, 2026

Learn how to use dnf swap and dnf shell to replace packages, switch from MariaDB to MySQL, or install full FFmpeg on Fedora without dependency conflicts.

Database

PostgreSQL Full-Text Search: High-Performance Vietnamese Search Without Elasticsearch

By admin May 19, 2026

Don't rush to install Elasticsearch! A detailed guide on building high-speed, accurate Vietnamese search directly in PostgreSQL using only tsvector and GIN Index.

Linux

Mastering chroot on Linux: From Sandbox Isolation to Real-World System Rescue

By admin May 18, 2026

Discover how to use chroot for application isolation and Linux boot rescue. A practical guide to mastering your system without the need for complex Docker or VM setups.

Security

Hunting Security Vulnerabilities with Semgrep: Fast, Accurate, and Extremely Easy Rule Writing

By admin May 18, 2026

Learn how to use Semgrep for automated source code analysis, quickly detect security vulnerabilities, and effectively integrate into CI/CD workflows for developers.

Python

Python Loguru Tutorial: Modern Logging Without the Boilerplate Code

By admin May 18, 2026

Forget the complex standard logging module. Loguru is the modern logging solution for Python. Learn to configure colorful logs, auto-rotate files, and debug fast with @logger.catch.

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

Building a Real-time Notification System with Node.js and Redis Pub/Sub: Rescuing the Database at 2 AM

Prometheus Process Exporter Guide: Detailed Monitoring of Linux Process Health

Mastering Load Testing with k6: From Simple Scripts to CI/CD Automation

SBOM: The “X-Ray” for Dependency Analysis and Vulnerability Scanning with Syft & Grype

Professional Database Monitoring with MySQL Audit Log Plugin

Seamlessly Replacing Fedora Packages with dnf swap and dnf shell

PostgreSQL Full-Text Search: High-Performance Vietnamese Search Without Elasticsearch

Mastering chroot on Linux: From Sandbox Isolation to Real-World System Rescue

Hunting Security Vulnerabilities with Semgrep: Fast, Accurate, and Extremely Easy Rule Writing

Python Loguru Tutorial: Modern Logging Without the Boilerplate Code