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Say Goodbye to Cron Jobs: Switching to systemd Timers for Superior Task Scheduling

By admin April 22, 2026

Learn to use systemd Timers for Linux task scheduling as a replacement for Cron Jobs. A detailed guide on configuring auto-retries, centralized logging, and resource limits.

Security

Configuring DNSSEC for Linux: Don’t Let Your Website Get Hijacked Even with SSL

By admin April 22, 2026

DNSSEC is a mandatory security layer to prevent DNS Spoofing. This article provides a detailed guide on configuring BIND9 on Linux, creating ZSK/KSK keys, and setting up the DS Record trust chain.

Docker

Kaniko: Building “Clean” and Secure Docker Images Without Root Privileges

By admin April 22, 2026

Build Docker images securely without root privileges or a Docker Daemon. A detailed guide on using Kaniko to optimize security and performance for your CI/CD pipelines.

Security

Moving from iptables to nftables: Why It’s a Mandatory Step for SysAdmins

By admin April 22, 2026

Iptables is outdated and slow. Discover how nftables optimizes firewall performance, supports IPv4/IPv6 simultaneously, and how to safely migrate your Linux system.

Development

Building High-Speed Microservices with Go and gRPC: From Theory to Practice

By admin April 22, 2026

Learn to build high-speed microservices with Go and gRPC. A detailed guide on reducing latency by 40% and optimizing inter-service communication using Protocol Buffers.

Linux

Boosting Linux Server I/O Performance: noatime and tuned profile Tips

By admin April 22, 2026

A quick guide to optimizing Linux I/O performance by configuring noatime and using tuned profiles to reduce system latency.

Artificial Intelligence tutorial - IT technology blog

CLAUDE.md: The “Map” That Helps Claude Code Master Your Project in Seconds

By admin April 22, 2026

Use CLAUDE.md to give AI a deep understanding of your project, ensure coding style compliance, and work like a Senior Developer. Detailed guide with examples.

MySQL

MySQL 8: Leveraging Functional and Invisible Indexes to Handle Millions of Records

By admin April 22, 2026

Discover how to optimize MySQL 8 with Functional and Invisible Indexes. Speed up JSON and date queries while safely testing indexes in production environments.

Monitoring

Prometheus Blackbox Exporter: Monitor HTTP, DNS, TCP and SSL Certificate Expiry

By admin April 21, 2026

Prometheus Blackbox Exporter monitors websites, TCP ports, DNS resolution, and SSL certificates from the end-user's perspective — no agent installation required on each server. This guide covers installation, configuring HTTP/DNS/TCP modules, and setting up SSL expiry alerts integrated with Alertmanager.

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

Say Goodbye to Cron Jobs: Switching to systemd Timers for Superior Task Scheduling

Configuring DNSSEC for Linux: Don’t Let Your Website Get Hijacked Even with SSL

Kaniko: Building “Clean” and Secure Docker Images Without Root Privileges

Moving from iptables to nftables: Why It’s a Mandatory Step for SysAdmins

Building High-Speed Microservices with Go and gRPC: From Theory to Practice

Boosting Linux Server I/O Performance: noatime and tuned profile Tips

CLAUDE.md: The “Map” That Helps Claude Code Master Your Project in Seconds

MySQL 8: Leveraging Functional and Invisible Indexes to Handle Millions of Records

Prometheus Blackbox Exporter: Monitor HTTP, DNS, TCP and SSL Certificate Expiry