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/*
 * Copyright 2002-2016 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
 *
 *      https://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.util.backoff;

/**
 * Provide a {@link BackOffExecution} that indicates the rate at which
 * an operation should be retried.
 *
 * 

Users of this interface are expected to use it like this: * *

 * BackOffExecution exec = backOff.start();
 *
 * // In the operation recovery/retry loop:
 * long waitInterval = exec.nextBackOff();
 * if (waitInterval == BackOffExecution.STOP) {
 *     // do not retry operation
 * }
 * else {
 *     // sleep, e.g. Thread.sleep(waitInterval)
 *     // retry operation
 * }
 * }
* * Once the underlying operation has completed successfully, * the execution instance can be simply discarded. * * @author Stephane Nicoll * @since 4.1 * @see BackOffExecution */ @FunctionalInterface public interface BackOff { /** * Start a new back off execution. * @return a fresh {@link BackOffExecution} ready to be used */ BackOffExecution start(); }




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