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Networking tutorial - IT technology blog

Split-Horizon DNS with BIND9: Stop Hairpinning Your Internal Traffic

April 30, 2026

Solve routing loops and improve network security by configuring Split-Horizon DNS with BIND9. This guide shows you how to serve different IP addresses based on the user's location.

Database

PostgreSQL Stored Procedures and Triggers: Stop Leaking Your Business Logic

April 30, 2026

Stop duplicating business logic across microservices. Learn how to use PostgreSQL Stored Procedures and Triggers to centralize your rules and slash API latency.

Linux

Mastering Sed and Awk: High-Performance Linux Text Processing

April 30, 2026

Ditch the heavy editors. Master Sed and Awk to process massive log files and automate reports directly from the Linux command line without risking a server crash.

Programming

Scaling React Performance: Mastering Memoization, Code Splitting, and the Profiler

April 30, 2026

Is your React app feeling sluggish? Learn how to use memoization, code splitting, and the Profiler to slash render times and reduce bundle sizes in large-scale applications.

Programming

Go Concurrency: Building High-Performance Systems with Goroutines and Channels

April 30, 2026

Ditch heavy OS threads for Go's lightweight Goroutines. This guide walks you through the M:N scheduler, channel synchronization, and the Worker Pool pattern with real-world examples.

DevOps

Scaling Kubernetes Monitoring: My 6-Month Journey with the Prometheus Operator

April 30, 2026

A practical look at deploying the Prometheus Operator on Kubernetes. Discover how we moved from manual ConfigMaps to automated, label-based monitoring for 40+ microservices.

Networking

GNS3 on Ubuntu: Build a Pro-Grade Network Lab Without the Hardware Cost

April 30, 2026

Ditch the expensive hardware. This guide shows you how to install GNS3 on Ubuntu, tune it for peak performance using KVM, and bridge your virtual labs to the physical world.

Beyond Linear Chains: Building Production-Ready AI Agents with LangGraph

April 30, 2026

Ditch the spaghetti code. Learn how to use LangGraph to build resilient, stateful AI agents with built-in error handling and human-in-the-loop checkpoints.

Programming

Scaling Beyond REST: A Hands-on Guide to Redis Streams and Python

April 30, 2026

Tired of cascading timeouts in your microservices? Discover how Redis Streams and Python provide a lightweight, persistent alternative to Kafka for building reliable event-driven systems.