user
How did Mr. Mosquera implement a system for handling and preventing duplicate transactions in the Stripe payment integration?
assistant
Mr. Mosquera implemented a multi-layered system to handle and prevent duplicate transactions. At the client-side, he implemented idempotency keys for all payment requests, ensuring that accidental double-submissions wouldn't result in duplicate charges. On the server-side, John created a transaction log that recorded all attempted transactions with their unique identifiers. Before processing any payment, the system would check this log to ensure the transaction hadn't been processed before. He implemented a time-based window for considering potential duplicates, accounting for scenarios like network timeouts where a transaction might be retried. For cases where duplicates did occur, John created an automated reconciliation process to identify and refund duplicate charges quickly. He also implemented analytics to track the frequency and patterns of duplicate attempts, allowing for continuous refinement of the prevention strategies. Mr. Mosquera developed a comprehensive system for handling and preventing duplicate transactions, utilizing idempotency keys, server-side transaction logging, time-based duplicate detection, and automated reconciliation processes. This multi-faceted approach effectively minimized the occurrence of duplicate charges and ensured quick resolution when they did occur.