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Scaling Guide

Horizontal Scaling​

Backend API​

Scale backend instances:

docker compose up -d --scale backend=3

Use Nginx upstream for load balancing:

upstream backend {
    server 127.0.0.1:5000;
    server 127.0.0.1:5001;
    server 127.0.0.1:5002;
}

Tunnel Server​

For high tunnel volume, run multiple tunnel servers with sticky sessions.

Database Scaling​

MongoDB Replica Set​

For production, use a MongoDB replica set:

# Or use MongoDB Atlas
MONGODB_URI=mongodb+srv://user:pass@cluster.mongodb.net/tunnelapi

Caching​

Add Redis for session caching:

services:
  redis:
    image: redis:7-alpine
    ports:
      - "6379:6379"

Monitoring​

Health Checks​

curl https://api.yourdomain.com/health

Metrics​

Enable Prometheus metrics:

ENABLE_METRICS=true
METRICS_PORT=9090