Serverless Architecture for E-Commerce: Scalability & Cost Optimization

AWS Lambda Order Handler Function

// AWS Lambda Async Order Processor Node.js Function
exports.handler = async (event) => {
  const orderData = JSON.parse(event.body);
  
  // Asynchronously publish order to AWS SQS queue
  await sqs.sendMessage({
    QueueUrl: process.env.ORDER_QUEUE_URL,
    MessageBody: JSON.stringify(orderData)
  }).promise();

  return {
    statusCode: 200,
    body: JSON.stringify({ message: "Order queued successfully", orderId: orderData.id })
  };
};