/*
* Copyright (c) 2008-2017, Hazelcast, Inc. 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.
* 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 com.hazelcast.spi.partitiongroup;
/**
* This class contains the definition of known Discovery SPI metadata to support automatic
* generation of zone aware backup strategies based on cloud or service discovery provided
* information. These information are split into three different levels of granularity:
* <ul>
* <li><b>Zone:</b> A low-latency link between (virtual) data centers in the same area</li>
* <li><b>Rack:</b> A low-latency link inside the same data center but for different racks</li>
* <li><b>Host:</b> A low-latency link on a shared physical node, in case of virtualization being used</li>
* </ul>
*/
public enum PartitionGroupMetaData {
;
/**
* Metadata key definition for a low-latency link between (virtual) data centers in the same area
*/
public static final String PARTITION_GROUP_ZONE = "hazelcast.partition.group.zone";
/**
* Metadata key definition for a low-latency link inside the same data center but for different racks
*/
public static final String PARTITION_GROUP_RACK = "hazelcast.partition.group.rack";
/**
* Metadata key definition for a low-latency link on a shared physical node, in case of virtualization being used
*/
public static final String PARTITION_GROUP_HOST = "hazelcast.partition.group.host";
}