In financial backend systems, network retries represent a classic race-condition vector. If a client attempts to post a transaction, suffers a TCP timeout, and blindly retries, the backend risks posting the transaction twice. To prevent duplicate financial operations, we must design an Idempote...
Source: [Dev.to](https://dev.to/borino88/designing-an-idempotent-transaction-api-preventing-duplicate-financial-operations-41ng)