Grokking Staff Engineer Interview
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AI Coding Tools and Engineering Quality

// Generated change. Request: "retry seller fee charges when the payments API times out"
async function chargeSellerFee(sellerId, amountCents) {
  for (let attempt = 1; attempt <= 3; attempt++) {
    try {
      return await payments.charge({ sellerId, amountCents });
    } catch (err) {
      const retryable = err.code === 'TIMEOUT' && attempt < 3;
      if (!retryable) throw err;
      await sleep(250 * attempt);
    }
  }
}

An engineer on the seller tools team asked an AI coding assistant for this change, and the assistant also wrote a test

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