credit-system

A two-tier credit system manages subscription credits with rollover caps and permanent purchased credits separately to ensure accurate, fault-tolerant billing across multi-step workflows. It isolates each pool to apply distinct expiration and rollover rules.

Atomic transactions with row-level locking prevent race conditions during concurrent billing. This guarantees that all credit movements are processed safely without overselling or data corruption when multiple processes attempt deductions simultaneously.

Refunds are automatically routed back to their original credit pools, whether subscription or purchased. Every deduction and refund movement is recorded in a detailed audit trail, ensuring full traceability and accurate balance reconciliation.

Yes, the credit system supports subscription-first deductions across multi-step billing workflows. It prioritizes drawing from monthly subscription credits before tapping into permanent purchased credits to maximize user value.

You need atomic credit management with audit trails when your billing system requires precise tracking of subscription and purchased credits. It is essential for preventing double-spending and ensuring compliance during high-volume financial operations.