xianwen-server-ops

name	xianwen-server-ops
description	Server operations for Xianwen Online: Hetzner VPS management, server stability, connection pool tuning, WebSocket management, security hardening, monitoring, and performance optimization. Use when dealing with server issues, '伺服器', '斷線', '穩定性', or infrastructure.

Xianwen Server Operations

Server infrastructure management, extracted from major migration and stability sessions.

Infrastructure

Component	Provider	Details
Game Server	Hetzner VPS (Tokyo)	Docker Compose, Rust/Actix-Web
Database	Neon PostgreSQL	ap-southeast-1, pooler connection
DNS	Cloudflare	play.xianwen.online
Previous hosting	Fly.io	Migrated away for stability

Server Architecture

Hetzner VPS (5.223.42.8)
├── Docker Compose
│   ├── xianwen-server (Rust binary)
│   └── Redis (session cache)
├── Nginx (reverse proxy, SSL)
└── Monitoring scripts

Connection Management

Key Settings

// Database pool
max_connections: 16  // Increased from 8 after load issues
min_connections: 2

// WebSocket
// DashMap replaces RwLock<HashMap> for connection tracking
// ConnectionManager is now decentralized

Common Stability Issues

Symptom	Root Cause