Data Retention
| Data Type | Retention | Archive |
|---|---|---|
| Ledger entries | 7 years | S3 Glacier |
| Payment records | 7 years | S3 Glacier |
| Audit logs | 7 years | S3 Glacier |
| Market prices | 5 years | S3 |
| Analytics aggregates | 3 years | MongoDB TTL |
| Session tokens | 7 days | Deleted |
| Idempotency records | 24 hours | Deleted |