Mycat practice using the configuration

Originally written a lot, about the configuration of the interpretation and use of attention, but found a little long-winded gold content is not high, it is a direct example of the practical use of it stood for reference.

<!DOCTYPE mycat:schema SYSTEM "schema.dtd">
<mycat:schema xmlns:mycat="http://io.mycat/">

    <schema name="trade_db" checkSQLschema="false" sqlMaxLimit="1000" dataNode="dn5">
        <table name="o_payment" dataNode="dn1,dn2,dn3,dn4" rule="rule1" />
        <table name="o_consignee" dataNode="dn1,dn2,dn3,dn4" rule="rule1" />
        <table name="u_order" dataNode="dn1,dn2,dn3,dn4" rule="rule3" />
        <table name="o_item" dataNode="dn1,dn2,dn3,dn4" rule="rule1" />
        <table name="user" dataNode="dn1,dn2,dn3,dn4" rule="rule1" />
        <table name="dis_info" dataNode="dn1,dn2,dn3,dn4" rule="rule1" />
    </schema>

        <schema name="message_DB" checkSQLschema="false" sqlMaxLimit="1000" dataNode="dn13">
        <table name="sys_log"  dataNode="dn11,dn12" rule="rule4" />
                <table name="message_send" dataNode="dn11,dn12" rule="rule5" />
                <table name="system_message" dataNode="dn11,dn12" rule="rule6" />
                <table name="user_message" dataNode="dn11,dn12" rule="rule4" />
    </schema>

    <dataNode name="dn1" dataHost="localhost1" database="trade_db1" />
    <dataNode name="dn2" dataHost="localhost1" database="trade_db2" />
    <dataNode name="dn3" dataHost="localhost1" database="trade_db3" />
    <dataNode name="dn4" dataHost="localhost1" database="trade_db4" />
    <dataNode name="dn5" dataHost="localhost2" database="ec-trade_db" />
    <dataNode name="dn11" dataHost="localhost1" database="ec-message_db1" />
    <dataNode name="dn12" dataHost="localhost1" database="ec-message_db2" />
    <dataNode name="dn13" dataHost="localhost2" database="ec-message_db" />

    <dataHost name="localhost1" maxCon="4096" 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="192.168.10.128:3306" user="root"
                   password="123456">
        </writeHost>

    </dataHost>
    <dataHost name="localhost2" maxCon="4096" 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="hostM2" url="192.168.10.129:3306" user="root"
                   password="123456">
        </writeHost>
    </dataHost>
</mycat:schema>