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Development tutorial - IT technology blog

Practical Redis Caching: From DB Crashes to Handling Millions of Requests

By IT From Zero May 3, 2026

Key takeaways from 6 months of operating Redis in production. Detailed guide on reducing Database load from 95% to 15% using Cache-Aside, Write-Through, and Jitter TTL techniques.

Ubuntu

Joining Ubuntu Server to Windows AD with SSSD: Centralized Management for Hundreds of Users

By IT From Zero May 3, 2026

Manually managing users on dozens of Ubuntu servers is a nightmare. This guide shows how to use SSSD to join Ubuntu Server to Windows AD for centralized management, automated home directories, and enhanced security.

Docker

Securing Docker Images with Cosign: Thwarting Malware in the Software Supply Chain

By IT From Zero May 3, 2026

Forget Notary v1; Cosign is the new standard for Docker image security. This guide covers signing, verification, and CI/CD integration to protect your systems from malware.

Development

Building Job Queues with BullMQ and Redis: The Secret to Silky Smooth Background Processing

By IT From Zero May 2, 2026

Learn how to build a professional Job Queue system with BullMQ and Redis in Node.js. Optimize background tasks, automate retries, and boost application performance effectively.

Ubuntu

Build Your Own Home NAS with Ubuntu Server and OpenMediaVault: Optimized 10TB Storage

By IT From Zero May 2, 2026

Transform Ubuntu Server into a powerful Home NAS with OpenMediaVault. A detailed guide for beginners covering installation, disk management, and Docker media streaming.

Monitoring

Telegraf Installation Guide: The ‘Backbone’ of Metrics Collection for InfluxDB

By IT From Zero May 2, 2026

A detailed guide on installing and optimizing Telegraf. Collect metrics from Linux and Docker for InfluxDB to build a professional monitoring system.

Network

Implementing Dynamic Routing on Linux with FRRouting (FRR): From OSPF to BGP

By IT From Zero May 2, 2026

Instead of manual static route configuration, use FRRouting (FRR) to automate your Linux network. A detailed guide on practical OSPF and BGP setup.

Artificial Intelligence tutorial - IT technology blog

Langfuse (Self-hosted) Guide: Monitoring and Optimizing LLM Costs from A-Z

By IT From Zero May 2, 2026

A detailed guide on deploying Self-hosted Langfuse with Docker for LLM monitoring. Practical tips on token management, prompt debugging, and cutting API costs by 30%.

Python

Using Tenacity to ‘Resurrect’ Python Apps: Mastering API and Database Error Handling

By IT From Zero May 2, 2026

Is your system crashing due to unstable network connections? Discover Tenacity—the Python library for building professional retry mechanisms that make your code resilient against API and database failures.

Claude Code, Cursor, or Copilot? Comparing AI Coding Assistants in 2026

By IT From Zero May 2, 2026

A hands-on comparison of Claude Code, Cursor, and GitHub Copilot in 2026. Which tool should you use to refactor legacy code and handle midnight 500 errors most effectively?

Optimizing Redis RAM with HyperLogLog and Bloom Filter: Counting and Deduplicating at Scale

Building an Event-Driven Microservices System with Apache Kafka and NestJS: From Producer and Consumer to Dead Letter Queue (DLQ)

Installing and Configuring Rootless Docker: Run Docker Without Root to Protect Your Host

Configuring a PPPoE Server on Linux Using rp-pppoe for ISP Labs

A Guide to DiskCache in Python: Safe Multi-Process Disk Caching Without Redis

How to Configure Host sFlow on Linux: Real-Time Network Traffic and KVM Monitoring

Diagnosing and Resolving Deadlocks in PostgreSQL: Inspecting Lock Trees and Configuring Proper Timeouts

ESXi Host Configuration Backup and Restore with PowerCLI and ESXCLI: Saving Your Virtualization Cluster During Outages

Guide to VFIO PCIe Passthrough on Linux KVM: GPU Passthrough for Windows VMs

Integrating OpenTelemetry into Python: Practical Microservices Monitoring Strategies

Practical Redis Caching: From DB Crashes to Handling Millions of Requests

Joining Ubuntu Server to Windows AD with SSSD: Centralized Management for Hundreds of Users

Securing Docker Images with Cosign: Thwarting Malware in the Software Supply Chain

Building Job Queues with BullMQ and Redis: The Secret to Silky Smooth Background Processing

Build Your Own Home NAS with Ubuntu Server and OpenMediaVault: Optimized 10TB Storage

Telegraf Installation Guide: The ‘Backbone’ of Metrics Collection for InfluxDB

Implementing Dynamic Routing on Linux with FRRouting (FRR): From OSPF to BGP

Langfuse (Self-hosted) Guide: Monitoring and Optimizing LLM Costs from A-Z

Using Tenacity to ‘Resurrect’ Python Apps: Mastering API and Database Error Handling

Claude Code, Cursor, or Copilot? Comparing AI Coding Assistants in 2026