Marketplace Avoided Double Charges
A marketplace struggled with retries causing duplicate charges during network hiccups. By introducing provider idempotency keys, queue-based processing, and replay-safe webhooks, duplicates disappeared. They also logged a fingerprint composed of order number, payer, currency, and amount for cross-checking. Support gained a single search box to trace events. Customer trust improved, refunds dropped, and weekly revenue stabilized. Need that fingerprint recipe in your stack? Ask, and we will outline it step by step.