Code reviewMediumcr-g308

Subject IdempotencyLevel Mid–Senior~18 minCommon in Networking & APIs interviewsIndustries Software development

Question

Review this JavaScript client that sends an idempotency key with each retry of a refund request.

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Code to reviewjs

1async function refund(orderId, amount) {2  for (let i = 0; i < 3; i++) {3    const key = crypto.randomUUID();4    const res = await fetch("/refunds", {5      method: "POST",6      headers: { "Idempotency-Key": key },7      body: JSON.stringify({ orderId, amount }),8    });9    if (res.ok) return res.json();10  }11  throw new Error("refund failed");12}

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