dubbo ClusterRules 源码
dubbo ClusterRules 代码
文件路径：/dubbo-common/src/main/java/org/apache/dubbo/common/constants/ClusterRules.java
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.apache.dubbo.common.constants;
/**
* constant for Cluster fault-tolerant mode
*/
public interface ClusterRules {
/**
* When invoke fails, log the initial error and retry other invokers
* (retry n times, which means at most n different invokers will be invoked)
**/
String FAIL_OVER = "failover";
/**
* Execute exactly once, which means this policy will throw an exception immediately in case of an invocation error.
**/
String FAIL_FAST = "failfast";
/**
* When invoke fails, log the error message and ignore this error by returning an empty Result.
**/
String FAIL_SAFE = "failsafe";
/**
* When fails, record failure requests and schedule for retry on a regular interval.
**/
String FAIL_BACK = "failback";
/**
* Invoke a specific number of invokers concurrently, usually used for demanding real-time operations, but need to waste more service resources.
**/
String FORKING = "forking";
/**
* Call all providers by broadcast, call them one by one, and report an error if any one reports an error
**/
String BROADCAST = "broadcast";
String AVAILABLE = "available";
String MERGEABLE = "mergeable";
String EMPTY = "";
}
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