Introduction

AWS Lambda is a serverless computing platform that allows developers to run code without having to manage or provision any servers. It is a great way to quickly build and deploy applications without having to worry about the underlying infrastructure. DynamoDB is a NoSQL database service that provides fast and predictable performance with seamless scalability. In this lesson, we will learn how to use AWS Lambda with DynamoDB to build an application.

What is AWS Lambda?

AWS Lambda is a serverless computing platform that allows developers to run code without having to manage or provision any servers. It is a great way to quickly build and deploy applications without having to worry about the underlying infrastructure. AWS Lambda functions are written in Node.js, Python, Java, or C# and can be triggered by events such as an HTTP request, a message from an Amazon Kinesis stream, or a change in an Amazon S3 bucket.

What is DynamoDB?

DynamoDB is a NoSQL database service that provides fast and predictable performance with seamless scalability. It is a fully managed, multi-region, and multi-master database that provides consistent single-digit millisecond latency. DynamoDB is designed to be highly available and durable, with built-in security, backup, and restore features.

How to Use AWS Lambda with DynamoDB

In this section, we will learn how to use AWS Lambda with DynamoDB to build an application. We will use AWS CDK with Typescript to deploy the infrastructure and write code snippets using Typescript.

Step 1: Create an AWS Lambda Function

The first step is to create an AWS Lambda function. To do this, we will use the AWS CDK with Typescript. We will create a new project and add the AWS Lambda library to it. Then, we will create a new Lambda function and configure it with the necessary parameters.

Step 2: Create a DynamoDB Table

The next step is to create a DynamoDB table. We will use the AWS CDK with Typescript to create a new DynamoDB table and configure it with the necessary parameters. We will also add the necessary permissions to the Lambda function so that it can access the DynamoDB table.

Step 3: Write the Lambda Function Code

The next step is to write the Lambda function code. We will use Typescript to write the code for the Lambda function. The code will be responsible for reading and writing data to the DynamoDB table.

Step 4: Deploy the Infrastructure

The final step is to deploy the infrastructure. We will use the AWS CDK with Typescript to deploy the Lambda function and the DynamoDB table. We will also use the AWS CLI to deploy the Lambda function and the DynamoDB table.

Conclusion

In this lesson, we learned how to use AWS Lambda with DynamoDB to build an application. We used AWS CDK with Typescript to deploy the infrastructure and wrote code snippets using Typescript. We also used the AWS CLI to deploy the Lambda function and the DynamoDB table. By following these steps, we were able to quickly build and deploy an application without having to worry about the underlying infrastructure.