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Development tutorial - IT technology blog

Secure Webhooks in Node.js: HMAC-SHA256 Verification and Proper Retry Handling

By admin July 18, 2026

An unauthenticated webhook is an easy target for forged requests — this article covers how to protect a Node.js endpoint with HMAC-SHA256, handle idempotency to prevent duplicate processing on retries, and implement exponential backoff when calling downstream services. Includes complete working code and curl commands to test immediately.

Python

Automating Docker with Python: From Bash Scripts to a Professional SDK

By admin July 18, 2026

No more typing Docker commands by hand. Learn to use the Docker SDK for Python to automate Container, Image, and Network management — with real-world error handling experience included.

Docker

Docker Scout: A ‘Magnifying Glass’ for Security Vulnerabilities and How to Patch Images from CLI to CI/CD

By admin July 18, 2026

Learn how to use Docker Scout to scan for security vulnerabilities, patch critical CVEs, and automate testing with GitHub Actions to protect your images.

Ubuntu

Building Your Own S3-Compatible Object Storage with MinIO on Ubuntu Server

By admin July 18, 2026

A detailed guide on installing MinIO Object Storage on Ubuntu Server. The perfect AWS S3 alternative to optimize storage costs and boost application performance.

Artificial Intelligence tutorial - IT technology blog

Teaching AI Agents Long-Term Memory with Mem0: A Solution for Python Developers

By admin July 18, 2026

Is your AI forgetting user preferences? Learn how to integrate Mem0 into Python to build long-term memory, making your AI Agents smarter and more personalized.

Mastering MergeKit: The Ultimate Trick to ‘Mix’ LLM Models Without Heavy GPUs

By admin July 18, 2026

A detailed guide on using MergeKit to merge LLM models on Linux. Save on GPU costs and optimize AI performance using SLERP, TIES, and DARE algorithms.

Ubuntu

Centralized Server Management with Apache Guacamole on Ubuntu: RDP and SSH Directly in Your Browser

By admin July 18, 2026

A guide to installing Apache Guacamole on Ubuntu for accessing RDP, SSH, and VNC via the browser. A centralized, secure, and clientless management solution.

Python

Python JSON Serialization: 10x Speed Boost with orjson and msgspec

By admin July 18, 2026

Is Python's default json library too slow? Explore orjson and msgspec—the duo that boosts data processing by 10x with native support for datetime, UUID, and high-speed validation.

Development

Docusaurus: Making Docs-as-Code Documentation a Dream, Not a Nightmare

By admin July 18, 2026

Don't let documentation become a nightmare. This A-Z Docusaurus guide helps you build professional Docs-as-Code documentation sites in just minutes.

Development

Implementing ABAC with Open Policy Agent (OPA) and Node.js for Complex Microservices Systems

By admin July 17, 2026

When RBAC is no longer sufficient for complex authorization logic in Microservices, Open Policy Agent (OPA) and the ABAC model offer a practical solution. This post shares production experience with Node.js, Rego policies, and how to integrate OPA into Express middleware.