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How to Deploy a Highly Available TURN/STUN (coturn) Edge Across Amsterdam VPS and New York VPS with GeoDNS, Dual‑Stack IPv4/IPv6, TLS, and Prometheus/Grafana Monitoring on Ubuntu 24.04 (2025 Tutorial)

WebRTC applications require reliable ICE candidates and connectivity solutions to traverse NAT and firewalls. A highly available TURN/STUN server deployment across multiple geographic regions ensures low-latency media relay and optimal user experience for real-time communications. This comprehensive tutorial demonstrates deploying…

How to Deploy a Multi‑Region WordPress Across Amsterdam VPS and New York VPS with Cloudflare APO, S3 Media Sync, and Zero‑Downtime Failover (2025 Tutorial)

Introduction Building a multi-region WordPress deployment requires careful orchestration of database replication, media synchronization, and content delivery optimization. In this comprehensive tutorial, we’ll deploy WordPress across Amsterdam VPS and New York VPS instances with Cloudflare Automatic Platform Optimization (APO), S3-compatible…

How to Build an Active‑Active Amsterdam VPS ↔ New York VPS Architecture: GeoDNS/Anycast, HAProxy, PostgreSQL 17 Logical Replication, and S3 Object Replication on Ubuntu 24.04 (2025 Tutorial)

Building a truly active-active architecture across continents requires careful orchestration of DNS routing, load balancing, database replication, and object storage synchronization. In this comprehensive tutorial, we’ll deploy a production-ready active-active setup between Onidel Amsterdam VPS and Onidel New York VPS…

How to Perform Zero‑Downtime Online Schema Changes on MySQL 8.4 LTS on an Ubuntu 24.04 VPS with gh‑ost and pt‑online‑schema‑change: Cutover Safety, Replica Lag Control, and Rollback (2025 Tutorial)

Database schema migrations in production environments require careful planning and execution to avoid costly downtime. Traditional MySQL schema changes can lock tables for extended periods, causing application outages and data inconsistencies. This tutorial demonstrates how to perform zero-downtime online schema…

How to Perform a Zero‑Downtime MySQL 8.0→8.4 LTS Upgrade on an Ubuntu 24.04 VPS with InnoDB Cluster (Group Replication), MySQL Router, Rolling Cutover/Failback, and TLS (2025 Tutorial)

Introduction Upgrading MySQL from 8.0 to 8.4 LTS in production environments requires careful planning to maintain high availability and prevent data loss. With MySQL 8.4 LTS offering enhanced performance, security improvements, and long-term support, the upgrade provides significant benefits for…

How to Perform a Zero‑Downtime PostgreSQL 16→17 Upgrade on an Ubuntu 24.04 VPS with Logical Replication, Cutover/Failback, and TLS (2025 Tutorial)

Introduction Upgrading PostgreSQL in production environments requires careful planning to avoid service disruptions. While traditional upgrade methods like pg_dump and pg_upgrade require downtime, logical replication enables zero-downtime PostgreSQL upgrades by maintaining a synchronized replica during the transition. This comprehensive tutorial…

How to Set Up Point‑in‑Time Recovery Backups for MySQL 8.4 LTS on an Ubuntu 24.04 VPS with MySQL Shell Dump, Binary Logs, and S3‑Compatible Storage (2025 Tutorial)

Setting up comprehensive point-in-time recovery (PITR) for MySQL 8.4 LTS is crucial for production databases. This tutorial demonstrates how to implement a robust backup strategy combining MySQL Shell’s logical dumps with binary log backups to S3-compatible storage, enabling recovery to…

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