{"id":10008194,"date":"2023-08-30T12:00:35","date_gmt":"2023-08-30T04:00:35","guid":{"rendered":"https:\/\/blog.itmax.cn\/?p=10008194"},"modified":"2023-08-30T12:00:35","modified_gmt":"2023-08-30T04:00:35","slug":"%e7%a0%b4%e5%b1%80%e4%b8%bb%e9%94%ae%e9%87%8d%e5%a4%8d%e9%97%ae%e9%a2%98%e7%9a%84%e5%9d%8e%e5%9d%b7%e8%b7%af-%e4%ba%ac%e4%b8%9c%e7%89%a9%e6%b5%81%e6%8a%80%e6%9c%af%e5%9b%a2%e9%98%9f","status":"publish","type":"post","link":"https:\/\/itmax.cn\/?p=10008194","title":{"rendered":"\u7834\u5c40\u4e3b\u952e\u91cd\u590d\u95ee\u9898\u7684\u574e\u5777\u8def | \u4eac\u4e1c\u7269\u6d41\u6280\u672f\u56e2\u961f"},"content":{"rendered":"

\u4f34\u968f\u7740\u4e1a\u52a1\u7684\u4e0d\u65ad\u53d1\u5c55\uff0c\u9010\u6e10\u7531\u5355\u5e93\u5355\u8868\u5411\u5206\u5e93\u5206\u8868\u8fdb\u884c\u53d1\u5c55\u3002\u5728\u8fd9\u4e2a\u8fc7\u7a0b\u4e2d\u4e0d\u53ef\u907f\u514d\u7684\u4e00\u4e2a\u95ee\u9898\u662f\u786e\u4fdd\u4e3b\u952e\u8981\u7684\u552f\u4e00\u6027\uff0c\u4ee5\u4fbf\u4e8e\u540e\u7eed\u7684\u6570\u636e\u805a\u5408\u3001\u5206\u6790\u7b49\u7b49\u573a\u666f\u7684\u4f7f\u7528\u3002\u5728\u8fdb\u884c\u5206\u5e93\u5206\u8868\u7684\u89e3\u51b3\u65b9\u6848\u4e2d\u6709\u591a\u79cd\u6280\u672f\u9009\u578b\uff0c\u5927\u6982\u5206\u4e3a\u4e24\u5927\u7c7b\u5ba2\u6237\u7aef\u5206\u5e93\u5206\u8868\u3001\u670d\u52a1\u7aef\u5206\u5e93\u5206\u8868\u3002\u4f8b\u5982 Sharding-JDBC\u3001ShardingSphere\u3001 MyCat\u3001 ShardingSphere-Proxy\u3001Jproxy(\u4eac\u4e1c\u5185\u90e8\u5df2\u5f03\u7528)\u7b49\u7b49\u3002<\/p>\n

\u5728\u8fd9\u4e2a\u71e5\u70ed\u7684\u590f\u5929\uff0c\u53c8\u7a81\u7136\u6536\u5230\u544a\u8b66\uff0c\u5206\u5e93\u5206\u8868\u7684\u4e3b\u952e\u51b2\u7a81\u4e86\uff0c\u8fd9\u8fd8\u80fd\u5fcd\uff1f\u4e0d\uff0c\u575a\u51b3\u4e0d\u80fd\u5fcd\uff0c\u5fc5\u987b\u89e3\u51b3\u6389\uff01\u540e\u9762\u54b1\u4eec\u6162\u6162\u9053\u6765\u662f\u5982\u4f55\u7834\u5c40\u7684\uff0c\u5982\u4f55\u8d70\u4e86\u4e00\u6761\u574e\u5777\u8def\u2026\u2026<\/p>\n

\u7ffb\u5c71\u7b2c\u4e00\u6b65<\/h2>\n

\u54b1\u4eec\u7684\u7cfb\u7edf\u4f7f\u7528\u7684\u662fShardingSphere\u8fdb\u884c\u5206\u5e93\u5206\u8868\u7684\uff0c\u5927\u6982\u7684\u914d\u7f6e\u4fe1\u606f\u5982\u4e0b\uff1a_\uff08\u51fa\u4e8e\u4fe1\u606f\u7684\u5b89\u5168\u8003\u8651\uff0c\u9690\u85cf\u4e86\u90e8\u5206\u4fe1\u606f\uff0c\u53ea\u4fdd\u7559\u7684\u90e8\u5206\u5185\u5bb9\uff0c\u4e0d\u8981\u5728\u610f\u8fd9\u4e9b\u7ec6\u8282\u80fd\u8bf4\u660e\u95ee\u9898\u5373\u53ef\uff09_<\/p>\n

<?xml version="1.0" encoding="UTF-8"?>\n<beans xmlns="http:\/\/www.springframework.org\/schema\/beans"\n       xmlns:xsi="http:\/\/www.w3.org\/2001\/XMLSchema-instance"\n       xmlns:sharding="http:\/\/shardingsphere.apache.org\/schema\/shardingsphere\/sharding"\n       xsi:schemaLocation="http:\/\/www.springframework.org\/schema\/beans\n       http:\/\/www.springframework.org\/schema\/beans\/spring-beans.xsd http:\/\/shardingsphere.apache.org\/schema\/shardingsphere\/sharding http:\/\/shardingsphere.apache.org\/schema\/shardingsphere\/sharding\/sharding.xsd">\n\n    <!--\u6570\u636e\u6e90-->\n    <bean id="database1" class="com.alibaba.druid.pool.DruidDataSource" destroy-method="close">\n    <\/bean>\n    <bean id="database2" class="com.alibaba.druid.pool.DruidDataSource" destroy-method="close">\n    <\/bean>\n    <bean id="database3" class="com.alibaba.druid.pool.DruidDataSource" destroy-method="close">\n    <\/bean>\n\n    <sharding:inline-strategy id="databaseStrategy" sharding-column="cloum1" algorithm-expression="table1_$->{(Math.abs(cloum1.hashCode()) % 512).intdiv(32) }" \/>\n    <sharding:inline-strategy id="orderNoDatabaseStrategy" sharding-column="cloum2" algorithm-expression="table2_$->{(Math.abs(cloum2.hashCode()) % 512).intdiv(32) }" \/>\n    <sharding:inline-strategy id="businessNoDatabaseStrategy" sharding-column="cloum3" algorithm-expression="table3_$->{(Math.abs(cloum3.hashCode()) % 512).intdiv(32) }" \/>\n    <!-- \u4e3b\u952e\u751f\u6210\u7b56\u7565 -\u96ea\u82b1\u7b97\u6cd5-->\n    <sharding:key-generator id="idKeyGenerator" type="SNOWFLAKE" column="id" props-ref="snowFlakeProperties"\/>\n\n    <sharding:data-source id="dataSource">\n        <sharding:sharding-rule data-source-names="database1,database2,database3">\n            <sharding:table-rules>\n\n                <sharding:table-rule logic-table="table1"\n                                     actual-data-nodes="database1_$->{0..15}.table1_$->{0..31}"\n                                     database-strategy-ref="orderNoDatabaseStrategy"\n                                     table-strategy-ref="order_waybill_tableStrategy"\n                                     key-generator-ref="idKeyGenerator"\/>\n\n                <sharding:table-rule logic-table="table2"\n                                     actual-data-nodes="database2_$->{0..15}.table2_$->{0..31}"\n                                     database-strategy-ref="databaseStrategy"\n                                     table-strategy-ref="waybill_contacts_tableStrategy"\n                                     key-generator-ref="idKeyGenerator"\/>\n\n                <sharding:table-rule logic-table="table3"\n                                     actual-data-nodes="database3_$->{0..15}.table3->{0..31}"\n                                     database-strategy-ref="databaseStrategy"\n                                     table-strategy-ref="waybill_tableStrategy"\n                                     key-generator-ref="idKeyGenerator"\/>\n            <\/sharding:table-rules>\n        <\/sharding:sharding-rule>\n    <\/sharding:data-source>\n\n\n    <bean id="sqlSessionFactory" class="com.baomidou.mybatisplus.extension.spring.MybatisSqlSessionFactoryBean">\n        <property name="dataSource" ref="dataSource" \/>\n        <property name="configLocation" value="classpath:spring\/mybatis-env-setting.xml"\/>\n        <property name="mapperLocations" value="classpath*:\/mapper\/*.xml"\/>\n    <\/bean>\n\n<\/beans>\n\n\n\n<\/code><\/pre>\n
\u4ece\u4e0a\u9762\u7684\u914d\u7f6e\u53ef\u4ee5\u770b\u51fa\u914d\u7f6e\u7684\u662f”SNOWFLAKE” \u4e3b\u952e\u4f7f\u7528\u7684\u662f\u96ea\u82b1\u7b97\u6cd5\uff0c\u96ea\u82b1\u7b97\u6cd5\u4ea7\u751f\u7684ID\u7684\u7ec4\u6210\u603b\u8ba164\u4f4d\uff0c\u7b2c\u4e00\u4f4d\u4e3a\u7b26\u53f7\u4f4d\u4e0d\u7528\uff0c\u540e41\u4f4d\u4e3a\u65f6\u95f4\u6233\u7528\u4e8e\u533a\u522b\u4e0d\u540c\u7684\u65f6\u95f4\u70b9\uff0c\u5728\u540e\u976210\u4f4d\u4e3aworkId\u7528\u4e8e\u533a\u522b\u4e0d\u540c\u7684\u673a\u5668\uff0c\u6700\u540e12\u4f4d\u4e3asequence\u7528\u4e8e\u540c\u4e00\u65f6\u523b\u540c\u4e00\u673a\u5668\u7684\u5e76\u53d1\u6570\u91cf\u3002<\/p>\n
\"\"<\/p>\n
\u90a3\u63a5\u4e0b\u6765\u5c31\u770b\u770b\u54b1\u4eec\u81ea\u5df1\u7684\u7cfb\u7edf\u662f\u600e\u4e48\u914d\u7f6e\u7684\u5427,\u5176\u4e2d\u7684\u5c5e\u6027snowFlakeProperties\u914d\u7f6e\u5982\u4e0b,\u5176\u4e2d\u7684max.vibration.offset\u914d\u7f6e\u8868\u793asequence\u7684\u8303\u56f4\u4e3a1024\u3002\u6309\u7167\u6b63\u5e38\u7684\u7406\u89e3\u4efb\u4f55\u5355\u4e2a\u673a\u5668\u7684\u914d\u7f6e\u90fd\u5f88\u96be\u8fbe\u5230\u8fd9\u4e2a\u5e76\u53d1\u91cf\uff0c\u96be\u9053\u662f\u8fd9\u4e2a\u503c\u6ca1\u6709\u751f\u6548\uff1f<\/p>\n
    <sharding:key-generator id="idKeyGenerator" type="SNOWFLAKE" column="id" props-ref="snowFlakeProperties"\/>\n\n\n\n<\/code><\/pre>\n
\"\"<\/p>\n
shardingsphere\u4e2d\u5b9e\u73b0\u83b7\u53d6\u4e3b\u952e\u7684\u5b9e\u73b0\u6e90\u7801\u5982\u4e0b\u7b80\u8ff0\uff0c\u5177\u4f53\u7684\u5b9e\u73b0\u7c7borg.apache.shardingsphere.core.strategy.keygen.SnowflakeShardingKeyGenerator,\u4ece\u6e90\u7801\u770b\u6e90\u7801\u7adf\u7136\u4e00\u4e2a\u65e5\u5fd7\u90fd\u6ca1\u6709\uff0c\u90a3\u8ba9\u54b1\u4eec\u600e\u4e48\u53bb\u6392\u67e5\u5462\uff1f\u600e\u4e48\u8bc1\u660e\u54b1\u4eec\u7684\u731c\u60f3\u662f\u5426\u6b63\u786e\u7684\u5462\uff1f\u56e7\u2026\u2026<\/p>\n
\"\"<\/p>\n
\u771f\u662f\u8d25\u4e5f\u8427\u4f55\u6210\u4e5f\u8427\u4f55\uff0cshardingsphere\u662f\u901a\u8fc7java\u7684SPI\u7684\u65b9\u5f0f\u8fdb\u884c\u7684\u4e3b\u952e\u751f\u6210\u7b56\u7565\u7684\u6269\u5c55\u3002\u81ea\u5b9a\u4e49\u5b9e\u73b0\u65b9\u5f0f\u5982\u4e0b\uff1a\u5b9e\u73b0org.apache.shardingsphere.spi.keygen.ShardingKeyGenerator\u63a5\u53e3\uff0c\u5982\u679c\u81ea\u5df1\u60f3\u8981\u5b9e\u73b0\u4f7f\u7528SPI\u65b9\u5f0f\u8fdb\u884c\u52a0\u8f7d\u5373\u53ef\uff0c\u90a3\u5c31\u8ba9\u54b1\u4eec\u81ea\u5df1\u52a0\u65e5\u5fd7\u5427\uff0c\u8d70\u4f60\u2026\u2026<\/p>\n
\"\"<\/p>\n
\u65e2\u7136\u90fd\u81ea\u5df1\u5199\u5b9e\u73b0\u4e86\uff0c\u90a3\u65e5\u5fd7\u5c31\u8be5\u52a0\u7684\u90fd\u52a0\u5427\uff0c\u54b1\u8fd9\u7edd\u4e0d\u541d\u556c\u8fd9\u51e0\u884c\u65e5\u5fd7<\/p>\n
\"\"<\/p>\n
\u4fee\u6539\u4e3b\u952e\u9009\u62e9\u751f\u6210\u7b56\u7565\u4e3a\u81ea\u5df1\u5b9e\u73b0\u7684\u7c7b type=”MYSNOWFLAKE”<\/p>\n
    <sharding:key-generator id="idKeyGenerator" type="MYSNOWFLAKE" column="id" props-ref="snowFlakeProperties"\/>\n\n\n\n<\/code><\/pre>\n
\u542f\u52a8\u770b\u65e5\u5fd7\uff0c\u5c5e\u6027\u4e2d\u6709max.vibration.offset=1024\u8fd9\u4e2a\u5c5e\u6027\uff0c\u7adf\u7136\u4f9d\u65e7\u62ff\u5230\u7684\u8fd8\u662f\u9ed8\u8ba4\u7684\u503c1\uff0c\u60ca\u8bb6\u4e2d\uff0c\u7ec6\u7ec6\u4e00\u7785\uff0c\u7ec8\u7a76\u53d1\u73b0\u4e86\u95ee\u9898\uff0c\u5728getProperty(key)\u65f6\u5982\u679c\u8fd4\u56de\u7684\u4e0d\u662fString\u7c7b\u578b\u90a3\u4e48\u4e3anull\uff0c\u8fdb\u800c\u53d6\u503c\u9ed8\u8ba4\u503c1\u3002\u4ece\u54b1\u4eec\u7684\u7cfb\u7edf\u914d\u7f6e\u4e2d\u53ef\u4ee5\u770b\u5230\u7cfb\u7edf\u914d\u7f6e\u7684int\u7c7b\u578b\u7684\u76841024\uff0c\u6240\u4ee5\u53d6\u503c\u9ed8\u8ba4\u503c1\u5c31\u8bf4\u901a\u4e86\u3002<\/p>\n
INFO 2023-08-17 14:07:51.062 2174320.63604.16922524693996408 176557 com.jd.las.waybill.center.config.MySnowflakeShardingKeyGenerator.getMaxVibrationOffset(MySnowflakeShardingKeyGenerator.java:107) -- \u9009\u62e9\u81ea\u5b9a\u4e49\u7684\u96ea\u82b1\u7b97\u6cd5\u83b7\u53d6\u5230\u7684properties={"max.vibration.offset":1024,"worker.id":"217","max.tolerate.time.difference.milliseconds":"3000"}\nINFO 2023-08-17 14:07:51.063 2174320.63604.16922524693996408 176558 com.jd.las.waybill.center.config.MySnowflakeShardingKeyGenerator.getMaxVibrationOffset(MySnowflakeShardingKeyGenerator.java:110) -- \u9009\u62e9\u81ea\u5b9a\u4e49\u7684\u96ea\u82b1\u7b97\u6cd5\u83b7\u53d6\u5230\u7684getMaxVibrationOffset=1\n\n\n\n<\/code><\/pre>\n
\"\"<\/p>\n
\"\"<\/p>\n
\u622a\u6b62\u5230\u76ee\u524d\u4e3b\u952e\u91cd\u590d\u7684\u95ee\u9898\u7ec8\u4e8e\u53ef\u4ee5\u89e3\u91ca\u7684\u901a\u4e86\uff0c\u56e0\u4e3a\u5e76\u53d1\u652f\u6301\u7684\u662f0~1\u603b\u51712\u4e2a\u5e76\u53d1\uff0c\u6240\u4ee5\u5728\u751f\u4ea7\u7cfb\u7edf\u4e2d\u5c24\u5176\u51fa\u73b0\u751f\u4ea7\u6ce2\u6b21\u7684\u65f6\u5019\u51fa\u73b0\u91cd\u590d\u503c\u7684\u53ef\u80fd\u6027\u662f\u5b58\u5728\u7684,\u7136\u540e\u628a1024\u53d8\u6210\u5b57\u7b26\u4e32\u4fee\u6539\u4e0a\u7ebf\uff0c\u76f8\u4fe1\u7cfb\u7edf\u540e\u9762\u5e94\u8be5\u4e0d\u4f1a\u4ea7\u751f\u6b64\u7c7b\u95ee\u9898\u4e86\u3002<\/p>\n
\u8d8a\u5cad\u7b2c\u4e8c\u6b65<\/h2>\n
\u5982\u679c\u751f\u6d3b\u603b\u662f\u559c\u6b22\u8ddf\u4f60\u5f00\u73a9\u7b11\uff0c\u9017\u4f60\u73a9\uff0c\u90a3\u4f60\u5c31\u914d\u5408\u5b83\u7b11\u4e00\u7b11\u5427\u3002<\/p>\n
\u5f53\u4e0a\u5b8c\u7ebf\u540e\uff0c\u8fc7\u4e86\u4e00\u6bb5\u65f6\u95f4\u53d1\u73b0\u91cd\u590d\u4e3b\u952e\u7684\u95ee\u9898\u7adf\u7136\u4f9d\u65e7\u5b58\u5728\u53ea\u662f\u9891\u7387\u5c11\u4e86\u4e9b,\u4e0d\u79d1\u5b66\u5440\u2026\u2026<\/p>\n
\u91cd\u65b0\u68b3\u7406\u601d\u8def\uff0c\u8fdb\u884c\u66f4\u8be6\u7ec6\u7684\u65e5\u5fd7\u8f93\u51fa\uff0c\u4e0b\u5355\u8fdb\u884c\u9a8c\u8bc1\uff0c\u5c06\u63a5\u5355\u843d\u5e93\u8fd9\u5768\u4ee3\u7801\u4e00\u5e76\u90fd\u52a0\u4e0a\u65e5\u5fd7\u4ee5\u53ca\u89e6\u53d1\u96ea\u82b1\u7b97\u6cd5\u7684\u751f\u6210\u7684ID\u4e5f\u52a0\u4e0a\u65e5\u5fd7<\/p>\n
\"\"<\/p>\n
\"\"<\/p>\n
\u901a\u8fc7\u65e5\u5fd7\u5206\u6790\uff0c\u53c8\u53c8\u53c8\u53d1\u73b0”\u7075\u5f02\u4e8b\u4ef6”\uff0c10\u6761\u63d2\u5165SQL\uff0c\u53ea\u6709\u4e24\u6761\u89e6\u53d1\u4e86shardingsphere\u7684\u96ea\u82b1\u7b97\u6cd5\uff0c\u8be7\u5f02\u7684\u5f88\u5440~<\/p>\n
\"\"<\/p>\n
\u67e5\u770b\u5176\u4ed68\u5f20\u8868\u843d\u5e93\u7684ID\u6570\u636e\u5982\u4e0b\u56fe\uff0cID(1692562397556875266) \u90fd\u4e3a1692\u5f00\u5934\u4e14\u957f\u5ea620\u4f4d\uff0c\u800cshardingsphere\u4ea7\u751f\u7684ID\uff08899413419526356993\uff09\u90fd\u4e3a899\u5f00\u5934\u4e14\u957f\u5ea619\u4f4d\uff0c\u5f88\u660e\u663e\u8fd98\u5f20\u8868\u7684\u4e3b\u952e\u4e0d\u662fshardingsphere\u751f\u6210\u7684\uff0c\u90a3\u662f\u8fd920\u4f4d\u7684\u6570\u636e\u54ea\u6765\u7684\u5462\uff1f\uff1f\uff1f\u4eceID\u4e0a\u770b\u660e\u663e\u4e5f\u4e0d\u662f\u81ea\u589e\u4ea7\u751f\u7684\u4e3b\u952e\uff0c\u53c8\u4e0d\u79d1\u5b66\u4e86\u2026\u2026<\/p>\n
\"\"<\/p>\n
\u53c8\u662f\u4e00\u4e2a\u6df1\u591c\u2026\u2026<\/p>\n
\u68b3\u7406\u601d\u8def\u91cd\u65b0\u5728\u950a\uff0c\u4e3b\u952e\u76f8\u5173\u7684\u9664\u4e86\u6570\u636e\u81ea\u589e\u957f\u3001shardingsphere\u914d\u7f6e\u7684\u96ea\u82b1\u8fd8\u6709\u552f\u4e00\u7684\u4e00\u4e2a\u76f8\u5173\u7684\u7ec4\u4ef6\u90a3\u5c31\u662fmybatis\uff0c\u7531\u4e8e\u9879\u76ee\u662f\u5f88\u65e9\u4e4b\u524d\u7684\u5e94\u7528\u4e86\uff0c\u4f7f\u7528\u7684\u662fbaomidou\u7684mybaits\u63d2\u4ef6\uff0c\u5982\u56fe\u662f\u63d2\u4ef6\u7684\u5165\u53e3\uff0cMybatisSqlSessionFactoryBean\u5b9e\u73b0FactoryBean<SqlSessionFactory>, InitializingBean, ApplicationListener<ApplicationEvent>\u51e0\u4e2aSpring\u7684\u63a5\u53e3<\/p>\n
\"\"<\/p>\n
baomidou\u6d89\u53ca\u8be5\u5757\u95ee\u9898\u7684\u6e90\u7801\u5982\u4e0b\uff1a<\/p>\n
\"\"<\/p>\n
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\"\"<\/p>\n
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\"\"<\/p>\n
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\n
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https:\/\/segmentfault.com\/a\/1190000044164571<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"
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