# Monitoring & Alerts

## Health Endpoints

| Endpoint | Description |
|----------|-------------|
| `/api/health` | API server health |
| `/api/health/db` | Database connectivity |
| `/api/health/blockchain` | Besu node status |

### Health Response

```json
{
  "status": "healthy",
  "timestamp": "2026-02-09T10:00:00Z",
  "components": {
    "database": "healthy",
    "blockchain": "healthy",
    "cache": "healthy"
  }
}
```

## Key Metrics

### Application Metrics

| Metric | Description | Alert Threshold |
|--------|-------------|-----------------|
| `http_request_duration_seconds` | API response time | > 2s |
| `http_requests_total` | Request count | - |
| `active_sessions` | Logged-in users | - |
| `queue_depth` | Pending jobs | > 1000 |

### Infrastructure Metrics

| Metric | Description | Alert Threshold |
|--------|-------------|-----------------|
| `cpu_usage_percent` | CPU utilization | > 80% |
| `memory_usage_percent` | Memory utilization | > 85% |
| `disk_usage_percent` | Disk utilization | > 90% |
| `db_connection_pool` | Active connections | > 80% of max |

### Business Metrics

| Metric | Description |
|--------|-------------|
| `applications_submitted` | New applications |
| `applications_processed` | Completed processing |
| `sla_breaches` | SLA violations |
| `certificates_issued` | Licenses issued |

## Alert Configuration

### Critical Alerts

- API health check failing
- Database unreachable
- Blockchain node disconnected
- Disk space < 10%

### Warning Alerts

- Response time > 2 seconds
- Error rate > 1%
- SLA breach count increasing
- Certificate minting failures

## Dashboard

Access Grafana dashboards at:
```
https://monitoring.license.gov.in/grafana
```

Dashboards available:
- System Overview
- Application Processing
- Blockchain Status
- SLA Compliance