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The AWS SDK for Java - Core module holds the classes that are used by the individual service clients to interact with Amazon Web Services. Users need to depend on aws-java-sdk artifact for accessing individual client classes.

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/*
 * Copyright 2012-2019 Amazon.com, Inc. or its affiliates. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License").
 * You may not use this file except in compliance with the License.
 * A copy of the License is located at
 *
 *  http://aws.amazon.com/apache2.0
 *
 * or in the "license" file accompanying this file. This file is distributed
 * on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
 * express or implied. See the License for the specific language governing
 * permissions and limitations under the License.
 */
package com.amazonaws.internal;

public class DynamoDBBackoffStrategy extends CustomBackoffStrategy {
	public int getBackoffPeriod(int retries) {

		if (retries <= 0) {
			return 0;
		} else {

			int delay = 50 * (int) Math.pow(2, retries - 1);

			if (delay < 0) {
				delay = Integer.MAX_VALUE;
			}

			return delay;
		}

	}

    public static final CustomBackoffStrategy DEFAULT = new DynamoDBBackoffStrategy();
}