AWS Lambda 在代码返回后需要 10 秒才能结束

Question

我写了一个打字稿 Lambda API 。如图

callback complete

记录的地方，10秒后lambda响应。您还可以在时间戳中看到这一点。

export const handler = async (event, context, callback) => {
  const { headers: { Authorization } } = event

  start = Date.now()

  const auth = await authorizer(Authorization, UserType.AGENT)

  console.log(`Authorizer took ${Date.now() - start} seconds to complete`)

  if (!auth.isAuthenticated) {
    callback(null, { statusCode: 401, body: JSON.stringify("Unauthorized") })
    return
  }

  start = Date.now()
  const associations = await dynamoDb.query({
    TableName: process.env.CUSTOMER_ASSISTANT_TABLE!,
    IndexName: 'xxxxx',
    KeyConditionExpression: 'xxxx = :email',
    ExpressionAttributeValues: {
      ':email': auth.user.email
    }
  }).promise()

  console.log(`DynamoDB query took ${Date.now() - start} seconds to complete`)

  const customers = associations.Items.map(association => association.customer)

  if (customers.length === 0) {
    callback(null, { statusCode: 200, body: JSON.stringify([]) })
    return
  }

  start = Date.now()
  const customerDetails = await pool.query(`SELECT email, first_name, last_name FROM users WHERE email IN ('${customers.join("','")}')`)
  console.log(`PostgreSQL query took ${Date.now() - start} seconds to complete`)

  const { rows } = customerDetails
  console.log('callback')
  callback(null, { statusCode: 200, body: JSON.stringify(rows) })
  console.log('callback complete')
  return
}