2026-01-21T09:12:04Z INFO  checkout-service request received id=ck-9211
2026-01-21T09:12:05Z WARN  payment-service slow response id=pm-5521
2026-01-21T09:12:06Z ERROR payment-service timeout id=pm-5521
2026-01-21T09:12:08Z WARN  checkout-service retry attempt id=ck-9211
2026-01-21T09:12:10Z ERROR checkout-service request failed id=ck-9211
2026-01-21T09:13:22Z INFO  inventory-service responded normally id=inv-3322
2026-01-21T09:13:40Z WARN  payment-service queue depth increasing
