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36 lines
2.1 KiB
36 lines
2.1 KiB
<?xml version="1.0" encoding="UTF-8"?>
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<!-- - - Licensed under the Apache License, Version 2.0 (the "License");
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- you may not use this file except in compliance with the License. - You
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may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0
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- - Unless required by applicable law or agreed to in writing, software -
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distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT
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WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the
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License for the specific language governing permissions and - limitations
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under the License. -->
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<!DOCTYPE mycat:rule SYSTEM "rule.dtd">
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<mycat:rule xmlns:mycat="http://io.mycat/">
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<!--订单根据税号使用一致性hash规则进行拆分,-->
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<tableRule name="xhfNsrsbhHashRule">
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<rule>
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<columns>xhf_nsrsbh</columns>
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<algorithm>xhfNsrsbh_murmur</algorithm>
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</rule>
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</tableRule>
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<function name="xhfNsrsbh_murmur" class="io.mycat.route.function.PartitionByMurmurHash">
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<property name="seed">0</property> <!-- 默认是0-->
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<property name="count">3</property><!-- 要分片的数据库节点数量，必须指定，否则没法分片-->
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<property name="virtualBucketTimes">160</property><!-- 一个实际的数据库节点被映射为这么多虚拟节点，默认是160倍，也就是虚拟节点数是物理节点数的160倍-->
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<!--
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<property name="weightMapFile">weightMapFile</property>
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节点的权重，没有指定权重的节点默认是 1。以 properties 文件的格式填写，以从 0 开始到 count-1 的整数值也就
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是节点索引为 key，以节点权重值为值。所有权重值必须是正整数，否则以 1 代替 -->
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<!--
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<property name="bucketMapPath">/etc/mycat/bucketMapPath</property>
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用于测试时观察各物理节点与虚拟节点的分布情况，如果指定了这个属性，会把虚拟节点的 murmur hash 值与物理节
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点的映射按行输出到这个文件，没有默认值，如果不指定，就不会输出任何东西 -->
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</function>
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</mycat:rule>
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