Glossary: System Design Beyond the Basics in C++
Idempotency key
A unique value sent with a request, such as the order ID on a payment call. On a retry the provider returns the first result instead of charging again.
Glossary: System Design Beyond the Basics in C++
A unique value sent with a request, such as the order ID on a payment call. On a retry the provider returns the first result instead of charging again.