AWS Lambda

Deploy a serverless Lambda function with DynamoDB, SQS Queue, and Function URL

AWS Lambda Example

This example demonstrates deploying a serverless application to AWS using Lambda Functions, DynamoDB Tables, SQS Queues, and IAM Roles.

Features

• Lambda Function: Serverless compute with Function URL
• DynamoDB Table: NoSQL database with partition key
• SQS Queue: Message queue for async processing
• IAM Role: Execution role with appropriate permissions
• ESBuild Bundle: Optimized TypeScript bundling

Project Setup

Key Features Explained

DynamoDB Table

Create a table with partition key:

Table("table", {
  tableName: `${app.name}-${app.stage}-table`,
  partitionKey: {
    name: "id",
    type: "S", // String type
  },
})

IAM Role

Define the Lambda execution role:

Role("role", {
  roleName: `${app.name}-${app.stage}-lambda-role`,
  assumeRolePolicy: {
    Version: "2012-10-17",
    Statement: [
      {
        Effect: "Allow",
        Principal: { Service: "lambda.amazonaws.com" },
        Action: "sts:AssumeRole",
      },
    ],
  },
})

ESBuild Bundle

Bundle your TypeScript code:

const bundle = await Bundle("api-bundle", {
  entryPoint: path.join(__dirname, "src", "index.ts"),
  format: "esm",
  platform: "node",
  target: "node20",
  minify: true,
  external: ["@aws-sdk/*"], // AWS SDK is provided by Lambda runtime
});

Function URL

Enable public HTTP access:

url: {
  authType: "NONE",
  cors: {
    allowOrigins: ["*"],
    allowMethods: ["GET", "POST", "PUT", "DELETE"],
    allowHeaders: ["content-type"],
  },
}

SQS Queue

Create a message queue:

Queue("queue", {
  queueName: `${app.name}-${app.stage}-queue`,
  visibilityTimeout: 30,
  messageRetentionPeriod: 345600, // 4 days
})

Source Code

View the complete source code: examples/aws-app