DynamoDB: Get Last Inserted Item (Guide w/ Code Examples)

To get the last inserted item in a DynamoDB table using the JavaScript SDK, you can use the query method to retrieve the item with the highest sort key (if your table has a sort key) or the highest primary key value.

You can use the ScanIndexForward parameter set to false and Limit parameter set to 1 to retrieve the last item.

const AWS = require('aws-sdk');
const dynamoDb = new AWS.DynamoDB.DocumentClient();

const params = {
    TableName: 'your-table-name',
    ScanIndexForward: false,
    Limit: 1
};

dynamoDb.scan(params, (err, data) => {
    if (err) {
        console.log(err);
    } else {
        console.log(data.Items[0]);
    }
});