mycat分库规则auto-sharding-long

1.定义规则rule.xml

<tableRule name="auto-sharding-long-userid">
        <rule>
                <columns>userid</columns>
                <algorithm>rang-long-userid</algorithm>
        </rule>
</tableRule>

<function name="rang-long-userid"
        class="io.mycat.route.function.AutoPartitionByLong">
        <property name="mapFile">autopartition-long-userid.txt</property>
</function>

[root@host01 conf]# more autopartition-long-userid.txt
# range start-end ,data node index
# K=1000,M=10000.
0-1000=0
1001-2000=1
2001-3000=2
3001-4000=3
4001-5000=4
5001-6000=5

2.schema.xml配置文件

<?xml version="1.0"?>
<!DOCTYPE mycat:schema SYSTEM "schema.dtd">
<mycat:schema xmlns:mycat="">

        <schema name="logdb" checkSQLschema="false" sqlMaxLimit="100">
          <table name="tb_log_t" primaryKey="ID" autoIncrement="true" dataNode="dn1,dn2,dn3,dn4,dn5,dn6" rule="mod-long" />
          <table name="tb_user_t" dataNode="dn1,dn2,dn3,dn4,dn5,dn6" rule="sharding-by-intfile-provcode" />
          <table name="tb_user_detail_t" dataNode="dn1,dn2,dn3,dn4,dn5,dn6" rule="auto-sharding-long-userid" />
        </schema>
        <schema name="coss03" checkSQLschema="false" sqlMaxLimit="100" dataNode="dnoss03"/>
        <dataNode name="dn1" dataHost="localhost1" database="log01" />
        <dataNode name="dn2" dataHost="localhost1" database="log02" />
        <dataNode name="dn3" dataHost="localhost1" database="log03" />
        <dataNode name="dn4" dataHost="localhost1" database="log04" />
        <dataNode name="dn5" dataHost="localhost1" database="log05" />
        <dataNode name="dn6" dataHost="localhost1" database="log06" />
        <dataNode name="dnoss03" dataHost="localhost1" database="oss03" />
        <dataHost name="localhost1" maxCon="1000" minCon="10" balance="0"
                          writeType="0" dbType="mysql" dbDriver="native" switchType="1" slaveThreshold="100">
                <heartbeat>select user()</heartbeat>
                <!-- can have multi write hosts -->
                <writeHost host="hostM1" url="192.168.56.141:3306" user="root"
                                   password="mysql">
                        <!-- can have multi read hosts -->
                        <readHost host="hostS2" url="192.168.56.142:3306" user="root" password="mysql" />
                </writeHost>
        </dataHost>
</mycat:schema>

3.建表语句
CREATE TABLE tb_user_detail_t (
  userid bigint not null primary key,
  name varchar(64) DEFAULT NULL,
  createtime datetime DEFAULT CURRENT_TIMESTAMP,
  moditytime datetime DEFAULT CURRENT_TIMESTAMP
) ENGINE=InnoDB DEFAULT CHARSET=utf8;


写入数据
insert into tb_user_detail_t(userid,name) values(999,'name999');
insert into tb_user_detail_t(userid,name) values(1999,'name999');
insert into tb_user_detail_t(userid,name) values(2999,'name999');
insert into tb_user_detail_t(userid,name) values(3999,'name999');
insert into tb_user_detail_t(userid,name) values(4999,'name999');
insert into tb_user_detail_t(userid,name) values(5999,'name999');


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