deploying-to-aws

name: Deploying to AWS description: The agent implements AWS cloud solutions with Lambda, S3, DynamoDB, ECS, and CDK infrastructure as code. Use when building serverless functions, deploying containers, managing cloud storage, or defining infrastructure as code.

Deploying to AWS

Quick Start

// Lambda handler
import { APIGatewayProxyEvent, APIGatewayProxyResult } from 'aws-lambda';

export const handler = async (event: APIGatewayProxyEvent): Promise<APIGatewayProxyResult> => {
  const { id } = event.pathParameters || {};
  return {
    statusCode: 200,
    headers: { 'Content-Type': 'application/json' },
    body: JSON.stringify({ id, message: 'Success' }),
  };
};

# Deploy with CDK
npx cdk deploy --all

Features

Common Patterns

S3 Presigned Upload URL

import { S3Client, PutObjectCommand } from '@aws-sdk/client-s3';
import { getSignedUrl } from '@aws-sdk/s3-request-presigner';

const s3 = new S3Client({});

async function getUploadUrl(key: string, contentType: string): Promise<string> {
  const command = new PutObjectCommand({ Bucket: process.env.BUCKET!, Key: key, ContentType: contentType });
  return getSignedUrl(s3, command, { expiresIn: 3600 });
}

DynamoDB Single-Table Pattern

import { DynamoDBDocumentClient, QueryCommand } from '@aws-sdk/lib-dynamodb';

// pk: USER#123, sk: PROFILE | ORDER#timestamp
async function getUserWithOrders(userId: string) {
  const result = await docClient.send(new QueryCommand({
    TableName: process.env.TABLE!,
    KeyConditionExpression: 'pk = :pk',
    ExpressionAttributeValues: { ':pk': `USER#${userId}` },
  }));
  return result.Items;
}

CDK Stack Definition

import * as cdk from 'aws-cdk-lib';
import * as lambda from 'aws-cdk-lib/aws-lambda';
import * as dynamodb from 'aws-cdk-lib/aws-dynamodb';

const table = new dynamodb.Table(this, 'Table', {
  partitionKey: { name: 'pk', type: dynamodb.AttributeType.STRING },
  sortKey: { name: 'sk', type: dynamodb.AttributeType.STRING },
  billingMode: dynamodb.BillingMode.PAY_PER_REQUEST,
});

const fn = new lambda.Function(this, 'Handler', {
  runtime: lambda.Runtime.NODEJS_20_X,
  handler: 'index.handler',
  code: lambda.Code.fromAsset('dist'),
  environment: { TABLE_NAME: table.tableName },
});

table.grantReadWriteData(fn);

Best Practices