{
  "nodes": [
    {
      "id": "webserver",
      "type": "webserver",
      "position": { "x": 0, "y": 0 },
      "props": {
        "label": "Web Server",
        "rpsCapacity": 100
      }
    },
    {
      "id": "cache",
      "type": "cache",
      "position": { "x": 100, "y": 0 },
      "props": {
        "label": "Redis Cache",
        "cacheTTL": 300000,
        "maxEntries": 1000,
        "evictionPolicy": "LRU"
      }
    },
    {
      "id": "database",
      "type": "database",
      "position": { "x": 200, "y": 0 },
      "props": {
        "label": "Primary DB",
        "replication": 2,
        "maxRPS": 500,
        "baseLatencyMs": 20
      }
    }
  ],
  "connections": [
    {
      "source": "webserver",
      "target": "cache",
      "label": "Cache Lookup",
      "direction": "forward",
      "protocol": "Redis",
      "tls": false,
      "capacity": 1000
    },
    {
      "source": "cache",
      "target": "database",
      "label": "Cache Miss",
      "direction": "forward",
      "protocol": "TCP",
      "tls": true,
      "capacity": 1000
    }
  ]
}