DynamoDB: Get Random Item (Guide w/ Code Examples)

To retrieve a random item from a DynamoDB table using the JavaScript SDK, you can use the query method and specify the ScanIndexForwardparameter as false. This will return the items in random order. To retrieve only one item, you can also specify a Limit parameter with a value of 1.

const AWS = require('aws-sdk');
const dynamoDb = new AWS.DynamoDB.DocumentClient();
const params = {
    TableName: 'myTable',
    Limit: 1,
    ScanIndexForward: false
};

dynamoDb.query(params, function(err, data) {
    if (err) {
        console.log(err);
    } else {
        console.log(data.Items[0]);
    }
});

Note that ScanIndexForward parameter only works with querymethod. In case you need to use scan method, you need need to fetch all the items and select one randomly.