security
Idempotency Key
Same key = same result. Retry safely without duplicate side effects.
stored keys0
duplicates blocked0
processed0
💡 Click "Send Request" multiple times with the same key — the operation executes only once.
Idempotency Store (0 keys)
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// request log
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How It Works
- Client generates unique key per operation
- Server checks: key seen before?
- If yes → return cached response (no re-execution)
- If no → execute, store result, return response
Use Cases
- Payment processing (Stripe Idempotency-Key)
- Order creation (prevent double-charge)
- Network retries in unreliable connections
- Any non-idempotent POST/PUT operation