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Development tutorial - IT technology blog

Farewell Webpack: How I ‘Hacked’ Project Build Speed 10x with Vite

By IT From Zero April 28, 2026

Vite is a next-generation build tool that accelerates Frontend development up to 10x compared to Webpack. A detailed guide on configuring aliases, proxies, and optimizing bundles.

Database

PostgreSQL FDW: The Ultimate Trick to Query MySQL, MongoDB, and CSV Directly Without ETL

By IT From Zero April 28, 2026

Forget complex ETL! A detailed guide on using PostgreSQL FDW to query MySQL, MongoDB, and CSV directly. Speed up multi-source data processing with just a few SQL lines.

Virtualization

Build Your Own Pro VDI System with Proxmox and Apache Guacamole: Smooth Remote Desktop via Browser

By IT From Zero April 28, 2026

Learn how to build a professional personal VDI system. Use Proxmox VE and Apache Guacamole for smooth access to Windows/Linux VMs via a web browser, optimized for speed and security.

MySQL

MySQL GTID Replication Setup Guide: Advanced Data Synchronization and Automatic Failover

By IT From Zero April 27, 2026

A step-by-step guide to configuring MySQL GTID Replication on Ubuntu: set up Master and Slave, verify data synchronization, and handle automatic failover without manually tracking binlog positions.

Security

Nginx GeoIP Blocking: How I Cut 80% of Junk Traffic from Unknown Countries

By IT From Zero April 27, 2026

Blocking IPs by country using Nginx and MaxMind GeoLite2 is the most effective way to eliminate 80% of botnet junk traffic. See this detailed configuration guide drawn from real-world experience.

Docker

Docker Compose: Wait for DB to be Fully “Healthy” Before Starting App with Health Checks

By IT From Zero April 27, 2026

Don't let your app crash just because the database starts slowly. Learn to combine depends_on and healthcheck in Docker Compose to control container startup order like a pro.

Linux

Speed Up Your Linux Terminal with fzf: Find Files and History Instantly

By IT From Zero April 27, 2026

Learn how to install and configure fzf (fuzzy finder) on Linux to quickly search for files, command history, and manage processes. Practical tips to boost your Terminal productivity.

Database

PostgreSQL Row Level Security (RLS): Securing Multi-tenant Data at the Core

By IT From Zero April 27, 2026

Learn how to configure PostgreSQL Row Level Security (RLS) for fine-grained data protection. An optimal solution for Multi-tenant/SaaS applications with real-world performance optimization tips.

Development

Turborepo + pnpm: The ‘Powerful’ Combo for Smoother Monorepo Management

By IT From Zero April 27, 2026

Learn to build professional Monorepos with Turborepo and pnpm. This solution accelerates builds, saves disk space, and provides efficient centralized code management for dev teams.

Linux

Controlling Process Resources with cgroups v2 on Linux: Limiting CPU, RAM, and I/O Without Docker

By IT From Zero April 27, 2026

Learn how to master Linux system resources with cgroups v2. Detailed instructions on limiting CPU, RAM, and I/O for applications running directly on the OS without Docker.

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

Farewell Webpack: How I ‘Hacked’ Project Build Speed 10x with Vite

PostgreSQL FDW: The Ultimate Trick to Query MySQL, MongoDB, and CSV Directly Without ETL

Build Your Own Pro VDI System with Proxmox and Apache Guacamole: Smooth Remote Desktop via Browser

MySQL GTID Replication Setup Guide: Advanced Data Synchronization and Automatic Failover

Nginx GeoIP Blocking: How I Cut 80% of Junk Traffic from Unknown Countries

Docker Compose: Wait for DB to be Fully “Healthy” Before Starting App with Health Checks

Speed Up Your Linux Terminal with fzf: Find Files and History Instantly

PostgreSQL Row Level Security (RLS): Securing Multi-tenant Data at the Core

Turborepo + pnpm: The ‘Powerful’ Combo for Smoother Monorepo Management

Controlling Process Resources with cgroups v2 on Linux: Limiting CPU, RAM, and I/O Without Docker