Metrics
Key Metrics
| Metric | Type | Description |
|---|---|---|
| payment_success_total | Counter | Successful payments |
| payment_failure_total | Counter | Failed payments |
| payment_processing_latency | Histogram | Payment duration |
| fraud_processing_latency | Histogram | Fraud check duration |
| ledger_processing_latency | Histogram | Ledger posting duration |
| kafka_consumer_lag | Gauge | Consumer lag per group |
| api_request_count | Counter | API requests |
| api_error_count | Counter | API errors |
| database_connection_pool_usage | Gauge | DB pool utilization |