How to make a uuid in dynamodb?

@denis 

To create a UUID in DynamoDB, you can use a Lambda function to generate a unique identifier for each item that is added to the table. Here is an example of how you can create a UUID in DynamoDB using a Lambda function:

1. Create a new Lambda function in the AWS Management Console.
2. In the Lambda function code editor, write a function that generates a UUID using a library such as uuid or uuid.v4.
3. Here is an example of a Node.js Lambda function that generates a UUID:

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const { v4: uuidv4 } = require('uuid');

exports.handler = async (event) => {
    const uuid = uuidv4();
    
    return {
        statusCode: 200,
        body: JSON.stringify(uuid)
    };
};

1. Once you have created the Lambda function, you can trigger it whenever a new item is added to your DynamoDB table by using DynamoDB Streams and a Lambda trigger.
2. Configure the Lambda function to be triggered by the DynamoDB Stream and have it generate a UUID for each new item that is added to the table.

By following these steps, you can create a UUID in DynamoDB using a Lambda function and ensure that each item in the table has a unique identifier.