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  • AI
  • DevOps
  • HomeLab
  • Linux
  • Networking
  • Programming
  • English
    • English
    • Tiếng Việt
    • 日本語
Breakings
AI tutorial - IT technology blog
Fast LLM Fine-Tuning with Unsloth on Linux: Cut 80% VRAM on Consumer GPUs
October 20, 2026
Database tutorial - IT technology blog
Mastering ScyllaDB on Docker: Deploying Ultra-Fast C++ NoSQL for High-Throughput Writes
October 20, 2026
DevOps tutorial - IT technology blog
Building an Internal Developer Portal with Spotify Backstage: Software Catalog, TechDocs, and Platform Automation
October 20, 2026
DevOps tutorial - IT technology blog
Kubernetes Disaster Recovery with Velero and MinIO: Complete Cluster Backup Guide
October 20, 2026
Programming tutorial - IT technology blog
Build Real-Time Apps with Phoenix LiveView: Server-Side State Without JavaScript
October 20, 2026
Networking tutorial - IT technology blog
Deploy a TACACS+ Server on Linux with tac_plus: Centralized AAA and Command Authorization
October 20, 2026
HomeLab tutorial - IT technology blog
Deploy Immich on Docker: Self-Hosted Google Photos Alternative with AI
October 20, 2026
HomeLab tutorial - IT technology blog
GitOps for HomeLab: Automate Kubernetes and K3s Deployments with Argo CD
October 20, 2026
AI tutorial - IT technology blog
Structured Data Extraction with BAML and Python: Faster LLM Output and Visual Prompt Testing
October 20, 2026
Linux tutorial - IT technology blog
Mastering HugePages and Transparent HugePages on Linux for PostgreSQL and Redis
October 20, 2026
Programming tutorial - IT technology blog
Posted inProgramming

Beyond the SPA: Why We Switched to Nuxt 3, Pinia, and SSR for Production

June 14, 2026
Transitioning from Vue 2 SPAs to Nuxt 3 can fix your SEO and performance woes. Discover how the Composition API and Pinia create a more maintainable, production-ready stack.
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DevOps tutorial - IT technology blog
Posted inDevOps

Beyond 100% Uptime: A No-Nonsense Guide to Error Budgets

June 14, 2026
Error Budgets aren't just metrics—they are a social contract between Dev and Ops. Learn how to calculate SLOs, track burn rates, and implement a policy that balances feature speed with system reliability.
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Networking tutorial - IT technology blog
Posted inNetworking

Active Network Service Monitoring with Prometheus Blackbox Exporter: HTTP, TCP, DNS, and ICMP Without Agents

June 13, 2026
Prometheus Blackbox Exporter lets you actively monitor HTTP endpoints, TCP ports, DNS records, and ICMP connectivity from the outside — no agents or code changes required. This guide covers setup, all four probe types, Prometheus relabeling configuration, and practical production tips from six months of real-world usage.
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Networking tutorial - IT technology blog
Posted inNetworking

Automate Network Device Config Backups with Oxidized: Git-Tracked History for Every Switch and Router Change

June 13, 2026
Oxidized is a lightweight daemon that polls your network devices, captures running configs, and commits any change to Git — building a complete version history across every switch and router you manage. This guide covers installation, device inventory setup, Git backend configuration, and credential hardening for production.
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Linux tutorial - IT technology blog
Posted inLinux

Systemd Socket Activation: On-Demand Service Startup to Optimize Linux Boot and Resources

June 13, 2026
Systemd socket activation lets services start only when a client connects — cutting boot time and saving RAM for services that rarely run. This guide covers quick setup, configuration options, advanced multi-tenant patterns, and field-tested debugging techniques for getting socket activation right before it hits production.
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Linux tutorial - IT technology blog
Posted inLinux

Fixing Linux Filesystem Errors with fsck and e2fsck: Safe Recovery from Corrupted Partitions

June 13, 2026
Power loss, bad sectors, or an abrupt reboot mid-write can all corrupt a Linux ext4 filesystem. This guide compares fsck, e2fsck, and debugfs, explains when to reach for each one, and covers a complete recovery workflow from diagnosis to verification — including backup superblock recovery and file extraction from severely damaged partitions.
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Networking tutorial - IT technology blog
Posted inNetworking

Configuring MPLS and LDP on Linux with FRRouting: Build a Label-Switched Network in Your HomeLab

June 13, 2026
A hands-on guide to configuring MPLS forwarding and LDP on Linux using FRRouting. Covers kernel setup, a full 3-router LSP lab, label verification commands, and practical debugging tips for HomeLab environments.
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Database tutorial - IT technology blog
Posted inDatabase

PostgreSQL Database Design Patterns: Polymorphic Association vs EAV vs JSONB for Flexible Schema

June 13, 2026
Comparing Polymorphic Association, EAV, and JSONB in PostgreSQL for flexible schema design — from a real 2 AM production incident. Includes migration guide from EAV to JSONB and practical code examples.
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Linux tutorial - IT technology blog
Posted inLinux

Linux Locale, Encoding, and Timezone: UTF-8 and Multi-Region Server Configuration Guide

June 13, 2026
Misconfigured locale and timezone are behind countless production bugs — from garbled non-ASCII characters to log timestamps that are hours off. This guide walks through setting up UTF-8 locale, system timezone, and correct encoding for Python scripts and systemd services on Ubuntu, RHEL, and inside Docker containers.
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Database tutorial - IT technology blog
Posted inDatabase

PostgreSQL as a Graph Database: 6 Months with Apache AGE

June 13, 2026
Ditch the complex recursive CTEs. Discover how to use Apache AGE to run openCypher graph queries directly inside your PostgreSQL database for better performance and cleaner code.
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