Idempotency
Concepts
Concept
Why Accounting Systems Must Be Deterministic
The same transaction, replayed twice, should not produce two different outcomes. If your accounting system isn't deterministic, it's a random number generator with a ledger …
Concept
What Is an Idempotency Key?
Click "Submit" twice by accident? Without idempotency protection, you might create duplicate transactions. Here's how enterprise systems prevent this.