DynamoDB: BatchGetItem (Guide w/ Code Examples)

Provided by Rafal Wilinski
AWS JavaScript SDK's BatchGetItem
operation returns the attributes of one or more items from one or more tables. It takes an object containing the table name and an array of key objects that specify the items to be retrieved and returns a promise that resolves to an object containing the retrieved items.
Here's an example of how to use the BatchGetItem
to retrieve items from a DynamoDB table.
const AWS = require('aws-sdk'); var ddb = new AWS.DynamoDB({apiVersion: '2012-08-10'}); var params = { RequestItems: { 'TABLE_NAME': { Keys: [ {'KEY_NAME': {N: 'KEY_VALUE_1'}}, {'KEY_NAME': {N: 'KEY_VALUE_2'}}, {'KEY_NAME': {N: 'KEY_VALUE_3'}} ], ProjectionExpression: 'KEY_NAME, ATTRIBUTE' } } }; ddb.batchGetItem(params, function(err, data) { if (err) {console.log("Error", err); } else { data.Responses.TABLE_NAME.forEach(function(element, index, array) { console.log(element); }); } });
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