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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.
/*
* 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.interceptor;
/**
* Interface that allows method parameters to be identified and tagged by a
* unique key.
*
* @author Dave Syer
*
*/
public interface MethodArgumentsKeyGenerator {
/**
* Get a unique identifier for the item that can be used to cache it between
* calls if necessary, and then identify it later.
*
* @param item the current method arguments (may be null if there are none).
* @return a unique identifier.
*/
Object getKey(Object[] item);
}