How to deploy Express Server on AWS Lambda

Amazon Web Services (AWS) Lambda is a serverless computing platform that allows you to run code without provisioning or managing servers. In this article, we will walk through the steps to deploy an Express server on AWS Lambda.

Step 1: Set up an AWS account

If you don’t already have an AWS account, you’ll need to create one. Once you have an AWS account, you can log in to the AWS Management Console and navigate to the Lambda service.

Step 2: Create an Express server

Before deploying your Express server to AWS Lambda, you’ll need to create the server and test it locally. Start by creating a new directory for your project and run npm init to initialize a new Node.js project. Then, install Express and create a simple server with some routes and middleware.

“`javascript
const express = require(‘express’);
const app = express();

app.get(‘/’, (req, res) => {
res.send(‘Hello from Express!’);
});

app.listen(3000, () => {
console.log(‘Server running on port 3000’);
});
“`

Step 3: Install serverless framework

The Serverless Framework is a popular open-source tool for building and deploying serverless applications. Install the Serverless Framework globally using npm.

“`shell
npm install -g serverless
“`

Step 4: Deploy Express server to AWS Lambda

With the Serverless Framework installed, you can now deploy your Express server to AWS Lambda. First, create a new file named serverless.yml in your project directory and configure the serverless.yml file with the necessary settings and plugins for deploying your Express server.

“`yaml
service: express-server
provider:
name: aws
runtime: nodejs14.x
region: us-east-1
functions:
app:
handler: app.handler
events:
– http:
path: /
method: any
“`

After configuring the serverless.yml file, run the serverless deploy command to deploy your Express server to AWS Lambda.

“`shell
serverless deploy
“`

Step 5: Test the deployed server

Once the deployment is complete, Serverless Framework will provide you with the endpoint URL for your deployed Express server. You can now test your server by sending HTTP requests to the endpoint URL.

That’s it! You’ve successfully deployed an Express server to AWS Lambda. You can now utilize the scalability and flexibility of AWS Lambda to handle your serverless application’s traffic and resources.