Control Plane

The Control Plane forms the reliable bridge between the central MongoDB source and our decentralized Edge Nodes. It monitors state changes seamlessly and propagates those differences in real-time.

Technology Stack:

• Runtime: Node.js, Express
• State Networking: WebSockets (ws packet streams)
• Caching: Standard SQLite

The Sync Strategy

Instead of edge nodes constantly polling an external database, which can easily bottleneck the primary Database when operating globally, the Control Plane establishes a highly parallel Change Stream connection to the Main Database.

Action Plan

1. Watch MongoDB for new proxy configurations, WAF rules, and routing conditions.
2. Persist the latest synced changes immediately into a local robust SQLite database for lightning-fast state recall upon unexpected process restarts.
3. Push differential updates instantly over an encrypted WebSocket Stream to all connected Edge Proxy Nodes efficiently.

Core Code Implementation

Here is an abstract representation showing how the Control Plane captures document changes and effectively relays them back out:

// Control Plane: MongoDB Change Stream Example
db.collection('domains').watch().on('change', async (change) => {
  if (change.operationType === 'insert') {
    const newDomain = change.fullDocument;
    
    // 1. Sync to local SQLite to survive system partitions
    await sqlite.run(
       'INSERT INTO domains (id, host, status) VALUES (?, ?, ?)', 
       [newDomain._id, newDomain.host, newDomain.status]
    );
    
    // 2. Broadcast immediately over WebSocket to active Edge Proxy limits
    wsServer.broadcast({ 
        type: 'DOMAIN_SYNC', 
        action: 'CREATED', 
        payload: newDomain 
    });
  }
});

This ensures extreme scalability—deploying ten or hundred Edge proxies puts completely zero additional load on your core Database. All load belongs localized strictly to the resilient Control Plane WebSocket cluster.