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Spring Retry provides an abstraction around retrying failed operations, with an emphasis on declarative control of the process and policy-based bahaviour that is easy to extend and customize. For instance, you can configure a plain POJO operation to retry if it fails, based on the type of exception, and with a fixed or exponential backoff.

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/*
 * Copyright 2006-2007 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License 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 org.springframework.retry.policy;

import org.springframework.retry.RetryContext;

/**
 * Simple map-like abstraction for stateful retry policies to use when storing
 * and retrieving {@link RetryContext} instances.
 * 
 * @author Dave Syer
 * 
 * @see MapRetryContextCache
 * 
 */
public interface RetryContextCache {

	RetryContext get(Object key);

	void put(Object key, RetryContext context) throws RetryCacheCapacityExceededException;

	void remove(Object key);

	boolean containsKey(Object key);

}