mycat分库分表配置参考

server.xml文件

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mycat:server SYSTEM "server.dtd">
<mycat:server xmlns:mycat="http://io.mycat/">
	<system>
		<property name="nonePasswordLogin">0</property> <!-- 0为需要密码登陆、1为不需要密码登陆 ,默认为0，设置为1则需要指定默认账户-->
		<property name="useHandshakeV10">1</property>
		<property name="useSqlStat">0</property>  <!-- 1为开启实时统计、0为关闭 -->
		<property name="useGlobleTableCheck">0</property>  <!-- 1为开启全加班一致性检测、0为关闭 -->
		<property name="sqlExecuteTimeout">300</property>  <!-- SQL 执行超时 单位:秒-->
		<property name="sequnceHandlerType">0</property>
		<!--<property name="sequnceHandlerPattern">(?:(\s*next\s+value\s+for\s*MYCATSEQ_(\w+))(,|\)|\s)*)+</property>-->
		<!--必须带有MYCATSEQ_或者 mycatseq_进入序列匹配流程 注意MYCATSEQ_有空格的情况-->
		<property name="sequnceHandlerPattern">(?:(\s*next\s+value\s+for\s*MYCATSEQ_(\w+))(,|\)|\s)*)+</property>
		<property name="subqueryRelationshipCheck">false</property>
        <!-- 子查询中存在关联查询的情况下,检查关联字段中是否有分片字段 .默认 false -->
		<!--  <property name="useCompression">1</property>--> <!--1为开启mysql压缩协议-->
        <!--  <property name="fakeMySQLVersion">5.6.20</property>--> <!--设置模拟的MySQL版本号-->
		<!-- <property name="processorBufferChunk">40960</property> -->
		<!-- 
		<property name="processors">1</property> 
		<property name="processorExecutor">32</property> 
		 -->
        <!--默认为type 0: DirectByteBufferPool | type 1 ByteBufferArena | type 2 NettyBufferPool -->
		<property name="processorBufferPoolType">0</property>
		<!--默认是65535 64K 用于sql解析时最大文本长度 -->
		<!--<property name="maxStringLiteralLength">65535</property>-->
		<!--<property name="sequnceHandlerType">0</property>-->
		<!--<property name="backSocketNoDelay">1</property>-->
		<!--<property name="frontSocketNoDelay">1</property>-->
		<!--<property name="processorExecutor">16</property>-->
		<!--
			<property name="serverPort">8066</property> <property name="managerPort">9066</property> 
			<property name="idleTimeout">300000</property> <property name="bindIp">0.0.0.0</property>
			<property name="dataNodeIdleCheckPeriod">300000</property> 5 * 60 * 1000L; //连接空闲检查
			<property name="frontWriteQueueSize">4096</property> <property name="processors">32</property> 
		-->
	<!--分布式事务开关，0为不过滤分布式事务，1为过滤分布式事务（如果分布式事务内只涉及全局表，则不过滤），2为不过滤分布式事务,但是记录分布式事务日志-->
		<property name="handleDistributedTransactions">0</property>
		<!--off heap for merge/order/group/limit 1开启 0关闭-->
		<property name="useOffHeapForMerge">0</property>
		<!--单位为m-->
        <property name="memoryPageSize">64k</property>
		<!--单位为k-->
		<property name="spillsFileBufferSize">1k</property>
		<property name="useStreamOutput">0</property>
		<!--单位为m-->
		<property name="systemReserveMemorySize">384m</property>
		<!--是否采用zookeeper协调切换  -->
		<property name="useZKSwitch">false</property>
		<!-- XA Recovery Log日志路径 -->
		<!--<property name="XARecoveryLogBaseDir">./</property>-->
		<!-- XA Recovery Log日志名称 -->
		<!--<property name="XARecoveryLogBaseName">tmlog</property>-->
		<!--如果为 true的话 严格遵守隔离级别,不会在仅仅只有select语句的时候在事务中切换连接-->
		<property name="strictTxIsolation">false</property>
		<property name="useZKSwitch">true</property>
	</system>
	<!-- 全局SQL防火墙设置 -->
	<!--白名单可以使用通配符%或着*-->
	<!--例如<host host="127.0.0.*" user="root"/>-->
	<!--例如<host host="127.0.*" user="root"/>-->
	<!--例如<host host="127.*" user="root"/>-->
	<!--例如<host host="1*7.*" user="root"/>-->
	<!--这些配置情况下对于127.0.0.1都能以root账户登录-->
	<!--
	<firewall>
	   <whitehost>
	      <host host="1*7.0.0.*" user="root"/>
	   </whitehost>
       <blacklist check="false">
       </blacklist>
	</firewall>
	-->
	<!--MyCat服务器的用户名、密码、逻辑数据库-->
	<user name="root" defaultAccount="true">
		<property name="password">123456</property>
		<property name="schemas">USER_DB,ORDER_DB,RED_DB</property>
		<!-- 表级 DML 权限设置 -->
		<!-- 		
		<privileges check="false">
			<schema name="TESTDB" dml="0110" >
				<table name="tb01" dml="0000"></table>
				<table name="tb02" dml="1111"></table>
			</schema>
		</privileges>		
		-->
	</user>
	<user name="user">
		<property name="password">123456</property>
		<property name="schemas">USER_DB,ORDER_DB,RED_DB</property>
		<property name="readOnly">true</property>
	</user>
</mycat:server>

schema.xml文件

<?xml version="1.0"?>
<!DOCTYPE mycat:schema SYSTEM "schema.dtd">
<mycat:schema xmlns:mycat="http://io.mycat/">
	<!--对于USER_DB，我们需要水平切分、E-R表、全局表 配置-->
	<schema name="USER_DB" checkSQLschema="true" sqlMaxLimit="1000">
		<!--全局表-->
		<table name="sys_region" type="global" dataNode="dn_usersdb3306,dn_usersdb3307" primaryKey="region_id"/>
		<!-- 要实现分库分表，那么就需要在<schema>标签下配置表了，现在是user_info表水平切分 -->
		<table name="user_info" primaryKey="id" dataNode="dn_usersdb3306,dn_usersdb3307" rule="mod-long">
			<!--E-R表-->
			<childTable name="user_address" joinKey="uid" parentKey="id" primaryKey="id"/>
		</table>
	</schema>
	<!--对于ORDER_DB，我们需要水平切分、E-R表 配置-->
	<schema name="ORDER_DB" checkSQLschema="true" sqlMaxLimit="1000">
		<!-- 要实现分库分表，那么就需要在<schema>标签下配置表了，现在是order_info表水平切分 -->
		<table name="order_info" primaryKey="oid" dataNode="dn_ordersdb3306,dn_ordersdb3307" rule="oid-mod-long">
			<!--E-R表-->
			<childTable name="order_detail" joinKey="oid" parentKey="oid" primaryKey="id"/>
			<childTable name="order_express" joinKey="oid" parentKey="oid" primaryKey="id"/>
		</table>
	</schema>
	<!--对于RED_DB，我们只需要读写分离即可-->
	<schema name="RED_DB" checkSQLschema="true" sqlMaxLimit="1000" dataNode="dn_redsdb3306">
		<!--如果只实现读写分离，此schema标签下不需要配置其他信息-->
	</schema>
	<!--配置了一个真实的数据库usersdb（用户数据库）-->
	<dataNode name="dn_usersdb3306" dataHost="localhost_usersdb3306" database="usersdb" />
	<dataNode name="dn_usersdb3307" dataHost="localhost_usersdb3307" database="usersdb" />
	<!--配置了一个真实的数据库ordersdb（订单数据库）-->
	<dataNode name="dn_ordersdb3306" dataHost="localhost_ordersdb3306" database="ordersdb" />
	<dataNode name="dn_ordersdb3307" dataHost="localhost_ordersdb3307" database="ordersdb" />
	<!--配置了一个真实的数据库redsdb（营销数据库，目前主要是红包信息）-->
	<dataNode name="dn_redsdb3306" dataHost="localhost_redsdb3306" database="redsdb" />
	<!--配置用户库3306，balance="1"表示开启读写分离，0表示不开启读写分离-->
	<dataHost name="localhost_usersdb3306" maxCon="1000" minCon="10" balance="1"
			  writeType="0" dbType="mysql" dbDriver="native" switchType="1" slaveThreshold="100">
		<heartbeat>select user()</heartbeat>
		<!-- can have multi write hosts -->
		<!--写库（主库）-->
		<writeHost host="hostM3306" url="192.168.10.130:3306" user="root" password="123456">
			 <!--读库（从库）-->
		     <readHost host="hostS4406" url="192.168.10.130:4406" user="root" password="123456"/>
		</writeHost>
	</dataHost>
	<!--配置用户库3307，balance="1"表示开启读写分离，0表示不开启读写分离-->
	<dataHost name="localhost_usersdb3307" maxCon="1000" minCon="10" balance="1"
			  writeType="0" dbType="mysql" dbDriver="native" switchType="1" slaveThreshold="100">
		<heartbeat>select user()</heartbeat>
		<!-- can have multi write hosts -->
		<!--写库（主库）-->
		<writeHost host="hostM3307" url="192.168.10.130:3307" user="root" password="123456">
			 <!--读库（从库）-->
		     <readHost host="hostS4407" url="192.168.10.130:4407" user="root" password="123456"/>
		</writeHost>
	</dataHost>
	<!--配置订单库3306，balance="1"表示开启读写分离，0表示不开启读写分离-->
	<dataHost name="localhost_ordersdb3306" maxCon="1000" minCon="10" balance="1"
			  writeType="0" dbType="mysql" dbDriver="native" switchType="1" slaveThreshold="100">
		<heartbeat>select user()</heartbeat>
		<!-- can have multi write hosts -->
		<!--写库（主库）-->
		<writeHost host="hostM3306" url="192.168.10.131:3306" user="root" password="123456">
			 <!--读库（从库）-->
		     <readHost host="hostS4406" url="192.168.10.131:4406" user="root" password="123456"/>
		</writeHost>
	</dataHost>
	
	<!--配置订单库3307，balance="1"表示开启读写分离，0表示不开启读写分离-->
	<dataHost name="localhost_ordersdb3307" maxCon="1000" minCon="10" balance="1"
			  writeType="0" dbType="mysql" dbDriver="native" switchType="1" slaveThreshold="100">
		<heartbeat>select user()</heartbeat>
		<!-- can have multi write hosts -->
		<!--写库（主库）-->
		<writeHost host="hostM3307" url="192.168.10.131:3307" user="root" password="123456">
			 <!--读库（从库）-->
		     <readHost host="hostS4407" url="192.168.10.131:4407" user="root" password="123456"/>
		</writeHost>
	</dataHost>
	<!--配置营销库，balance="1"表示开启读写分离，0表示不开启读写分离-->
	<dataHost name="localhost_redsdb3306" maxCon="1000" minCon="10" balance="1"
			  writeType="0" dbType="mysql" dbDriver="native" switchType="1" slaveThreshold="100">
		<heartbeat>select user()</heartbeat>
		<!-- can have multi write hosts -->
		<!--写库（主库）-->
		<writeHost host="hostM3306" url="192.168.10.132:3306" user="root" password="123456">
			 <!--读库（从库）-->
		     <readHost host="hostS4406" url="192.168.10.132:4406" user="root" password="123456"/>
		</writeHost>
	</dataHost>
</mycat:schema>

rule.xml文件--分表规则

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mycat:rule SYSTEM "rule.dtd">
<mycat:rule xmlns:mycat="http://io.mycat/">
	<tableRule name="rule1">
		<rule>
			<columns>id</columns>
			<algorithm>func1</algorithm>
		</rule>
	</tableRule>

	<tableRule name="rule2">
		<rule>
			<columns>user_id</columns>
			<algorithm>func1</algorithm>
		</rule>
	</tableRule>

	<tableRule name="sharding-by-intfile">
		<rule>
			<columns>sharding_id</columns>
			<algorithm>hash-int</algorithm>
		</rule>
	</tableRule>
	<tableRule name="auto-sharding-long">
		<rule>
			<columns>id</columns>
			<algorithm>rang-long</algorithm>
		</rule>
	</tableRule>
	<tableRule name="mod-long">
		<rule>
			<columns>id</columns>
			<algorithm>mod-long</algorithm>
		</rule>
	</tableRule>
	
	<!--订单水平切分规则-->
	<tableRule name="oid-mod-long">
		<rule>
			<columns>oid</columns>
			<algorithm>mod-long</algorithm>
		</rule>
	</tableRule>
	
	<tableRule name="sharding-by-murmur">
		<rule>
			<columns>id</columns>
			<algorithm>murmur</algorithm>
		</rule>
	</tableRule>
	<tableRule name="crc32slot">
		<rule>
			<columns>id</columns>
			<algorithm>crc32slot</algorithm>
		</rule>
	</tableRule>
	<tableRule name="sharding-by-month">
		<rule>
			<columns>create_time</columns>
			<algorithm>partbymonth</algorithm>
		</rule>
	</tableRule>
	<tableRule name="latest-month-calldate">
		<rule>
			<columns>calldate</columns>
			<algorithm>latestMonth</algorithm>
		</rule>
	</tableRule>
	
	<tableRule name="auto-sharding-rang-mod">
		<rule>
			<columns>id</columns>
			<algorithm>rang-mod</algorithm>
		</rule>
	</tableRule>
	
	<tableRule name="jch">
		<rule>
			<columns>id</columns>
			<algorithm>jump-consistent-hash</algorithm>
		</rule>
	</tableRule>
	<function name="murmur"
		class="io.mycat.route.function.PartitionByMurmurHash">
		<property name="seed">0</property><!-- 默认是0 -->
		<property name="count">2</property><!-- 要分片的数据库节点数量，必须指定，否则没法分片 -->
		<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 -->
		<!-- <property name="weightMapFile">weightMapFile</property> 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 -->
		<!-- <property name="bucketMapPath">/etc/mycat/bucketMapPath</property> 
			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 -->
	</function>

	<function name="crc32slot"
			  class="io.mycat.route.function.PartitionByCRC32PreSlot">
	</function>
	
	<function name="hash-int"
		class="io.mycat.route.function.PartitionByFileMap">
		<property name="mapFile">partition-hash-int.txt</property>
	</function>
	
	<function name="rang-long"
		class="io.mycat.route.function.AutoPartitionByLong">
		<property name="mapFile">autopartition-long.txt</property>
	</function>
	
	<function name="mod-long" class="io.mycat.route.function.PartitionByMod">
		<!-- how many data nodes -->
		<property name="count">2</property>
	</function>

	<function name="func1" class="io.mycat.route.function.PartitionByLong">
		<property name="partitionCount">8</property>
		<property name="partitionLength">128</property>
	</function>
	
	<function name="latestMonth"
		class="io.mycat.route.function.LatestMonthPartion">
		<property name="splitOneDay">24</property>
	</function>
	
	<function name="partbymonth"
		class="io.mycat.route.function.PartitionByMonth">
		<property name="dateFormat">yyyy-MM-dd</property>
		<property name="sBeginDate">2015-01-01</property>
	</function>
	
	<function name="rang-mod" class="io.mycat.route.function.PartitionByRangeMod">
        	<property name="mapFile">partition-range-mod.txt</property>
	</function>
	
	<function name="jump-consistent-hash" class="io.mycat.route.function.PartitionByJumpConsistentHash">
		<property name="totalBuckets">3</property>
	</function>
</mycat:rule>