📍 Platform: QNAP (Container Station) + ASUSTOR (Portainer) 🌐 Domain: *.np-dms.work (IP: 159.192.126.103) 🔒 Network: lcbp3 (Docker External Network) 📄 Version: v2.0.0 (Refactored for Stability)

🏢 Hardware Infrastructure

Server Role Separation

QNAP TS-473A

(Application & Database Server)
✔ Application Runtime	✔ API / Web	✔ Database (Primary)
✔ High CPU / RAM usage	✔ Worker / Queue	✖ No long-term backup
Container Station (UI)	32GB RAM (Capped)	AMD Ryzen V1500B

ASUSTOR AS5403T

(Infrastructure & Backup Server)
✔ File Storage	✔ Backup Target	✔ Docker Infra
✔ Monitoring / Registry	✔ Log Aggregation	✖ No heavy App logic
Portainer (Manage All)	16GB RAM	Intel Celeron @2GHz

Servers Specification & Resource Allocation

Device	Model	CPU	RAM	Resource Policy	Role
QNAP	TS-473A	AMD Ryzen V1500B	32GB	Strict Limits	Application, DB, Cache
ASUSTOR	AS5403T	Intel Celeron @ 2.00GHz	16GB	Moderate Limits	Infra, Backup, Monitor

Service Distribution by Server

QNAP TS-473A (Application Stack)

Category	Service	Strategy	Resource Limit (Est.)
Web App	Next.js (Frontend)	Single Instance	2.0 CPU / 2GB RAM
Backend API	NestJS	2 Replicas (Load Balanced)	2.0 CPU / 1.5GB RAM
Database	MariaDB (Primary)	Performance Tuned (Buffer Pool)	4.0 CPU / 5GB RAM
Worker	Redis + BullMQ Worker	Standalone + AOF	2.0 CPU / 1.5GB RAM
Search	Elasticsearch	Heap Locked (2GB)	2.0 CPU / 4GB RAM
API Gateway	NPM (Nginx Proxy Manager)	SSL Termination	1.0 CPU / 512MB RAM
Workflow	n8n	Automation	1.0 CPU / 1GB RAM
Code	Gitea	Git Repository	1.0 CPU / 1GB RAM

ASUSTOR AS5403T (Infrastructure Stack)

Category	Service	Notes
File Storage	NFS / SMB	Shared volumes for backup
Backup	Restic / Borg	Pull-based Backup (More Safe)
Docker Infra	Registry, Portainer	Container image registry, mgmt
Monitoring	Uptime Kuma	Service availability monitoring
Metrics	Prometheus, Grafana	Cross-Server Scraping
Log	Loki / Syslog	Centralized logging

🔄 Data Flow Architecture

┌──────────────┐ │ User │ └──────┬───────┘ │ HTTPS (443) ▼ ┌─────────────────────────────────────────────────────────────┐ │ QNAP TS-473A │ │ ┌─────────────────────────────────────────────────────────┐ │ │ │ Nginx Proxy Manager (NPM) │ │ │ │ SSL Termination + Round Robin LB │ │ │ └───────────────────────┬─────────────────────────────────┘ │ │ │ │ │ ┌───────────────────────▼─────────────────────────────────┐ │ │ │ ┌──────────────┐ ┌──────────────┐ ┌──────────────┐ | │ │ │ │ Next.js │─▶│ NestJS │ │ NestJS │ | │ │ │ │ (Frontend) │ │ (Replica 1) │ │ (Replica 2) │ │ │ │ │ └──────────────┘ └──────┬───────┘ └──────┬───────┘ │ │ │ │ │ │ │ │ │ │ ┌─────────────────────────┼────────────────┼────┐ │ │ │ │ ▼ ▼ ▼ ▼ │ │ │ │ ┌──────────┐ ┌──────────┐ ┌─────────────┐ │ │ │ │ │ MariaDB │ │ Redis │ │Elasticsearch│ │ │ │ │ │ (Primary)│ │(Persist.)│ │ (Search) │ │ │ │ │ └────┬─────┘ └──────────┘ └─────────────┘ │ │ │ └──────┼──────────────────────────────────────────────────┘ │ │ └──────┼────────────────────────────────────────────────────┘ | Local Dump -> Restic Pull (Cross-Server) ▼ ┌──────────────────────────────────────────────────────────────┐ │ ASUSTOR AS5403T │ │ ┌──────────────────────────────────────────────────────────┐ │ │ │ ┌──────────┐ ┌──────────┐ ┌──────────┐ │ │ │ │ │ Backup │ │ Registry │ │ Uptime │ │ │ │ │ │ (Restic) │ │ (Docker) │ │ Kuma │ │ │ │ │ └──────────┘ └──────────┘ └──────────┘ │ │ │ │ │ │ │ │ ┌──────────┐ ┌──────────┐ ┌──────────┐ │ │ │ │ │Prometheus│───▶│ Grafana │ │ Loki │ │ │ │ │ │(Scraper) │ │(Dashboard)│ │ (Logs) │ │ │ │ │ └──────────┘ └──────────┘ └──────────┘ ││ │ └──────────────────────────────────────────────────────────┘│ └──────────────────────────────────────────────────────────────┘