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phan-tich-tinh-huong

id: phan-tich-tinh-huong title: Phan B - Phan tich tinh huong slug: /phan-b/phan-tich-tinh-huong​

Phan B - Phan tich tinh huong

3 cau x 15 diem = 45 diem

Tra loi ngan gon, tap trung vao nguyen nhan va huong xu ly.

Cau 9 - Node.js bi cham toan he thong​

API co endpoint:

app.post("/reports", async (req, res) => {
  const result = generateLargeReport(req.body);

  return res.json({
    data: result,
  });
});

generateLargeReport() dung vong lap dong bo de xu ly hang trieu ban ghi.

Khi endpoint nay chay, cac API khac cung phan hoi rat cham.

Yeu cau tra loi​

  1. Vi sao mot endpoint lam cham cac endpoint khac?
  2. Them async vao ham co giai quyet duoc khong?
  3. Neu it nhat hai huong xu ly phu hop.

Bai lam​

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Cau 10 - MongoDB va xu ly dong thoi​

Collection san pham:

{
  "_id": "product_01",
  "name": "Keyboard",
  "stock": 5
}

Hai nguoi dung cung luc dat mua 4 san pham.

Doan code hien tai:

const product = await products.findOne({
  _id: productId,
});

if (product.stock >= quantity) {
  await products.updateOne(
    { _id: productId },
    {
      $set: {
        stock: product.stock - quantity,
      },
    },
  );
}

Yeu cau tra loi​

  1. Doan code co the xay ra loi gi?
  2. Viet lai query de khong lam ton kho bi am.
  3. Vi sao query moi an toan hon?

Bai lam​

// Viet query tai day
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Cau 11 - Skill, Agent va MCP​

Team dung Claude hoac Codex de tao API. Tuy nhien, AI thuong:

  • Tao sai cau truc thu muc.
  • Dung thu vien khong ton tai trong project.
  • Bo qua authorization.
  • Sua file ngoai pham vi.
  • Khong viet test.

Yeu cau tra loi​

  1. Skill nen chua nhung noi dung gi?
  2. Agent nen thuc hien cong viec theo cac buoc nao?
  3. MCP nen cap cho AI nhung tool hoac resource nao?
  4. Nhung thao tac nao AI phai xin xac nhan truoc khi thuc hien?

Bai lam​

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