Delete Multiple Items in DynamoDB Using Java (Guide w/ Code Examples)

Rafal Wilinski

Provided by Rafal Wilinski

To delete multiple items from a DynamoDB table in Java, you can use the batchWriteItem method of the AmazonDynamoDBClient class. This method lets you delete up to 25 items in a single request. The example below demonstrates how to use the batchWriteItem method to delete items from a table called "myTable".

import java.util.ArrayList; import java.util.List; import com.amazonaws.services.dynamodbv2.AmazonDynamoDBClient; import com.amazonaws.services.dynamodbv2.model.AttributeValue; import com.amazonaws.services.dynamodbv2.model.DeleteRequest; import com.amazonaws.services.dynamodbv2.model.WriteRequest; // Replace "tableName" with the name of your DynamoDB table String tableName = "tableName"; // Create a DynamoDB client AmazonDynamoDBClient client = new AmazonDynamoDBClient(); // Create a list of delete requests List<WriteRequest> requests = new ArrayList<>(); // Add delete requests to the list for (int i = 0; i < 25; i++) { AttributeValue value = new AttributeValue().withN(Integer.toString(i)); DeleteRequest request = new DeleteRequest().withKey(Map.of("id", value)); requests.add(new WriteRequest().withDeleteRequest(request)); } // Delete the items from the table client.batchWriteItem(Map.of(tableName, requests));

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