How can I deploy the serverless application by using the AWS CDK Library?

 In the context of AWS, you can easily define and even deploy a serverless app by using the platform of AWS SDK Library by using the simple steps which are given below:-

Install cdk

First, you would need to install the CDK by using the command “npm install -g aws-cdk”

Initialize CDK project

Now you would need to create a new directory for your particular CDK project and initialize it by using the following command

Cdk init app - - language=typescript

Define structure

Import * as cdk from ‘aws-cdk-lib’;

Import * as lambda from ‘aws-cdk-lib/aws-lambda’;

Import * as apigateway from ‘aws-cdk-lib/aws-apigateway’;

Import * as dynamodb from ‘aws-cdk-lib/aws-dynamodb’;

Export class MyServerlessAppStack extends cdk.Stack {

  Constructor(scope: cdk.Construct, id: string, props?: cdk.StackProps) {

    Super(scope, id, props);

    // Define Lambda function

    Const myLambdaFunction = new lambda.Function(this, ‘MyLambdaFunction’, {

      Runtime: lambda.Runtime.NODEJS_14_X,

      Handler: ‘index.handler’,

      Code: lambda.Code.fromAsset(‘lambda’)

    });

    // Define API Gateway

    Const api = new apigateway.RestApi(this, ‘MyApi’, {

      restApiName: ‘My API’,

      description: ‘My API Gateway’

    });

    Const integration = new apigateway.LambdaIntegration(myLambdaFunction);

    Const resource = api.root.addResource(‘myresource’);

    Resource.addMethod(‘GET’, integration);

    // Define DynamoDB table

    New dynamodb.Table(this, ‘MyTable’, {

      partitionKey: { name: ‘id’, type: dynamodb.AttributeType.STRING }

    });

  }

}

Const app = new cdk.App();

New MyServerlessAppStack(app, ‘MyServerlessAppStack’);

Deploy structure

You can use the CDK CLI for the purpose of synthesize the cloud formation template and deploy the infrastructure for your particular AWS account.