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bet365合作在夕阳映照下

2016-03-10 来源: 作者:陈延鹏 责任编辑:田艳敏

摘 要:bet365合作在夕阳映照下 y7ic82

 bet365合作在夕阳映照下

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/***Light-weightobjectpoolbasedonathread-localstack.**@param<T>thetypeofthepooledobject*/publicabstractclassRecycler<T>Recycler内部主要包含三个核心组件,各个组件负责对象池实现的具体部分,Recycler向外部提供统一的对象创建和回收接口: Handle WeakOrderQueue Stack各组件的功能如下HandleRecycler在内部类中给出了Handle的一个默认实现:DefaultHandle,Handle主要提供一个recycle接口,用于提供对象回收的具体实现,每个Handle关联一个value字段,用于存放具体的池化对象,记住,在对象池中,所有的池化对象都被这个Handle包装,Handle是对象池管理的基本单位 bet365注册几乎是人手一个

bet365合作在夕阳映照下

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1,自定义数字范围分片自定义数字范围分片,提前规划好分片字段某个范围属于哪个分片,比如说将第一个500W的bet365合作在夕阳映照下 分片在第一个节点上面,第二个500W的bet365合作在夕阳映照下 分片在第二个节点上,依次类推2,添加配置文件在function.xml里面进行配置: <!-- 对自定义数字分片规则rang-long-tr04的定义 --> <function name="rang-long-04" class="org.opencloudb.route.function.AutoPartitionByLong"> <property name="mapFile">autopartition-long04.txt</property> <property name="defaultNode">0</property> <property name="type">0</property> </function> <!-- 对表进行分片的描述,字段以及分片规则 --> <tableRule name="rang-long-tr04"> <rule> <columns>ID</columns> <algorithm>rang-long-04</algorithm> </rule> </tableRule>在schema.xml里面进行配置: <table name="ORDER0401" primaryKey="ID" dataNode="dn21,dn22" rule="rang-long-tr04"/>autopartition-long04.txt文件的配置: [root@wgq_idc_squid_1_11 conf]# more autopartition-long04.txt 0-500M=0 500M-1000M=1 1000M-1500M=2 You have mail in /var/spool/mail/root [root@wgq_idc_squid_1_11 conf]# 注意: 此配置非常简单,即预先制定可能的id范围到某个分片,所有的节点配置都是从0开始,及0代表节点13,建表并且录入bet365合作在夕阳映照下 CREATE TABLE ORDER0401(ID INT NOT NULL AUTO_INCREMENT PRIMARY KEY,PROVINCE VARCHAR(16),SN VARCHAR(64),CREATE_TIME DATETIME);mysql> CREATE TABLE ORDER0401(ID INT NOT NULL AUTO_INCREMENT PRIMARY KEY,PROVINCE VARCHAR(16),SN VARCHAR(64),CREATE_TIME DATETIME);Query OK, 0 rows affected (0.05 sec)mysql> INSERT INTO ORDER0401(ID,PROVINCE,SN,CREATE_TIME) VALUES(10001,'shanghai','shanghai10006_10000',NOW()); INSERT INTO ORDER0401(ID,PROVINCE,SN,CREATE_TIME) VALUES(5000001,'shanghai','shanghai10006_5000001',NOW()); mysql> explain INSERT INTO ORDER0401(ID,PROVINCE,SN,CREATE_TIME) VALUES(10001,'shanghai','shanghai10006_10000',NOW()); +-----------+--------------------------------------------------------------------------------------------------------+ | DATA_NODE | SQL | +-----------+--------------------------------------------------------------------------------------------------------+ | dn21 | INSERT INTO ORDER0401(ID,PROVINCE,SN,CREATE_TIME) VALUES(10001,'shanghai','shanghai10006_10000',NOW()) | +-----------+--------------------------------------------------------------------------------------------------------+ 1 row in set (0.01 sec) mysql> INSERT INTO ORDER0401(ID,PROVINCE,SN,CREATE_TIME) VALUES(10001,'shanghai','shanghai10006_10000',NOW()); Query OK, 1 row affected (0.01 sec) mysql> INSERT INTO ORDER0401(ID,PROVINCE,SN,CREATE_TIME) VALUES(5000001,'shanghai','shanghai10006_5000001',NOW()); Query OK, 1 row affected (0.00 sec) mysql> 4,对insert操作流程进行分析,参考mycat.log对路由过程做完整的分析查看后台mycat.log分析如下:开始获取连接: 02/12 21:17:13.614 DEBUG [$_NIOREACTOR-1-RW] (ServerQueryHandler.java:56) -ServerConnection [id=1, schema=TESTDB, host=127.0.0.1, user=test,txIsolation=3, autocommit=true, schema=TESTDB]INSERT INTO ORDER0401(ID,PROVINCE,SN,CREATE_TIME) VALUES(10001,'shanghai','shanghai10006_10000',NOW())开始建立缓存: 02/12 21:17:13.615 DEBUG [$_NIOREACTOR-1-RW] (RouterUtil.java:951) -try to find cache by primary key 02/12 21:17:13.616 INFO [$_NIOREACTOR-1-RW] (DefaultLayedCachePool.java:80) -create child Cache: TESTDB_ORDER0401 for layered cache TableID2DataNodeCache, size 10000, expire seconds 18000 02/12 21:17:13.616 DEBUG [$_NIOREACTOR-1-RW] (CacheManager.java:794) -Attempting to create an existing singleton. Existing singleton returned. 02/12 21:17:13.616 DEBUG [$_NIOREACTOR-1-RW] (Cache.java:955) -No BootstrapCacheLoaderFactory class specified. Skipping... 02/12 21:17:13.617 DEBUG [$_NIOREACTOR-1-RW] (Cache.java:929) -CacheWriter factory not configured. Skipping... 02/12 21:17:13.618 DEBUG [$_NIOREACTOR-1-RW] (MemoryStore.java:153) -Initialized net.sf.ehcache.store.NotifyingMemoryStore for TableID2DataNodeCache.TESTDB_ORDER0401 02/12 21:17:13.619 DEBUG [$_NIOREACTOR-1-RW] (Cache.java:1165) -Initialised cache: TableID2DataNodeCache.TESTDB_ORDER0401开始路由匹配: 02/12 21:17:13.621 DEBUG [$_NIOREACTOR-1-RW] (NonBlockingSession.java:113) -ServerConnection [id=1, schema=TESTDB, host=127.0.0.1, user=test,txIsolation=3, autocommit=true, schema=TESTDB]INSERT INTO ORDER0401(ID,PROVINCE,SN,CREATE_TIME) VALUES(10001,'shanghai','shanghai10006_10000',NOW()), route={ 1 -> dn21{INSERT INTO ORDER0401(ID,PROVINCE,SN,CREATE_TIME) VALUES(10001,'shanghai','shanghai10006_10000',NOW())} } rrs匹配好路由后,直接往对应的dn21节点开始执行insertbet365合作在夕阳映照下 录入操作: 02/12 21:17:13.624 DEBUG [$_NIOREACTOR-0-RW] (NonBlockingSession.java:229) -release connection MySQLConnection [id=8, lastTime=1455283033608, user=root, schema=db3, old shema=db3, borrowed=true, fromSlaveDB=false, threadId=52, charset=latin1, txIsolation=3, autocommit=true, attachment=dn21{INSERT INTO ORDER0401(ID,PROVINCE,SN,CREATE_TIME) VALUES(10001,'shanghai','shanghai10006_10000',NOW())}, respHandler=SingleNodeHandler [node=dn21{INSERT INTO ORDER0401(ID,PROVINCE,SN,CREATE_TIME) VALUES(10001,'shanghai','shanghai10006_10000',NOW())}, packetId=0], host=10.254.1.11, port=3317, statusSync=null, writeQueue=0, modifiedSQLExecuted=true]连接释放: 02/12 21:17:13.624 DEBUG [$_NIOREACTOR-0-RW] (PhysicalDatasource.java:403) -release channel MySQLConnection [id=8, lastTime=1455283033608, user=root, schema=db3, old shema=db3, borrowed=true, fromSlaveDB=false, threadId=52, charset=latin1, txIsolation=3, autocommit=true, attachment=null, respHandler=null, host=10.254.1.11, port=3317, statusSync=null, writeQueue=0, modifiedSQLExecuted=false]5,执行简单的查询,如果指定分片字段ID字段,则走分片查询单个分片节点mycat命令台显示结果: mysql> explain select * from ORDER0401 t1 where t1.ID=5000001; +-----------+------------------------------------------------+ | DATA_NODE | SQL | +-----------+------------------------------------------------+ | dn22 | select * from ORDER0401 t1 where t1.ID=5000001 | +-----------+------------------------------------------------+ 1 row in set (0.08 sec) mysql> select * from ORDER0401 t1 where t1.ID=5000001; +---------+----------+-----------------------+---------------------+ | ID | PROVINCE | SN | CREATE_TIME | +---------+----------+-----------------------+---------------------+ | 5000001 | shanghai | shanghai10006_5000001 | 2016-02-12 21:18:17 | +---------+----------+-----------------------+---------------------+ 1 row in set (0.00 sec) mysql> 查看后台mycat日志信息: 02/12 21:44:01.116 DEBUG [$_NIOREACTOR-1-RW] (ServerQueryHandler.java:56) -ServerConnection [id=1, schema=TESTDB, host=127.0.0.1, user=test,txIsolation=3, autocommit=true, schema=TESTDB]select * from ORDER0401 t1 where t1.ID=5000001 02/12 21:44:01.117 DEBUG [$_NIOREACTOR-1-RW] (EnchachePool.java:76) -SQLRouteCache miss cache ,key:TESTDBselect * from ORDER0401 t1 where t1.ID=5000001 02/12 21:44:01.118 DEBUG [$_NIOREACTOR-1-RW] (RouterUtil.java:951) -try to find cache by primary key 02/12 21:44:01.118 DEBUG [$_NIOREACTOR-1-RW] (EnchachePool.java:76) -TableID2DataNodeCache.TESTDB_ORDER0401 miss cache ,key:5000001 02/12 21:44:01.118 DEBUG [$_NIOREACTOR-1-RW] (NonBlockingSession.java:113) -ServerConnection [id=1, schema=TESTDB, host=127.0.0.1, user=test,txIsolation=3, autocommit=true, schema=TESTDB]select * from ORDER0401 t1 where t1.ID=5000001, route={ 1 -> dn22{select * from ORDER0401 t1 where t1.ID=5000001} } rrs 02/12 21:44:01.119 DEBUG [$_NIOREACTOR-1-RW] (PhysicalDBPool.java:452) -select read source hostM2 for dataHost:m2 02/12 21:44:01.120 DEBUG [$_NIOREACTOR-1-RW] (NonBlockingSession.java:229) -release connection MySQLConnection [id=17, lastTime=1455284641106, user=root, schema=db3, old shema=db3, borrowed=true, fromSlaveDB=false, threadId=59, charset=latin1, txIsolation=3, autocommit=true, attachment=dn22{select * from ORDER0401 t1 where t1.ID=5000001}, respHandler=SingleNodeHandler [node=dn22{select * from ORDER0401 t1 where t1.ID=5000001}, packetId=7], host=10.254.1.11, port=3327, statusSync=org.opencloudb.mysql.nio.MySQLConnection$StatusSync@6d1ef03, writeQueue=0, modifiedSQLExecuted=false] 02/12 21:44:01.121 DEBUG [$_NIOREACTOR-1-RW] (PhysicalDatasource.java:403) -release channel MySQLConnection [id=17, lastTime=1455284641106, user=root, schema=db3, old shema=db3, borrowed=true, fromSlaveDB=false, threadId=59, charset=latin1, txIsolation=3, autocommit=true, attachment=null, respHandler=null, host=10.254.1.11, port=3327, statusSync=null, writeQueue=0, modifiedSQLExecuted=false]6,如果分片字段范围的查询,则走所有节点去检索,哪怕只有一条bet365合作在夕阳映照下 在一个分片上,route路由也是走所有的分片进行检索查询 mysql> explain select * from ORDER0401 t1 where t1.ID<50000; +-----------+----------------------------------------------------------+ | DATA_NODE | SQL | +-----------+----------------------------------------------------------+ | dn21 | SELECT * FROM ORDER0401 t1 WHERE t1.ID < 50000 LIMIT 100 | | dn22 | SELECT * FROM ORDER0401 t1 WHERE t1.ID < 50000 LIMIT 100 | +-----------+----------------------------------------------------------+ 2 rows in set (0.01 sec) mysql> 7,如果bet365合作在夕阳映照下 走分片字段的查询,即使是单个bet365合作在夕阳映照下 ,也要route路由所有的分片,走所有的分片进行查询 mysql> explain select * from ORDER0401 t1 where t1.SN='shanghai10006_10000'; +-----------+--------------------------------------------------------------------------+ | DATA_NODE | SQL | +-----------+--------------------------------------------------------------------------+ | dn21 | SELECT * FROM ORDER0401 t1 WHERE t1.SN = 'shanghai10006_10000' LIMIT 100 | | dn22 | SELECT * FROM ORDER0401 t1 WHERE t1.SN = 'shanghai10006_10000' LIMIT 100 | +-----------+--------------------------------------------------------------------------+ 2 rows in set (0.00 sec) mysql>版权声明:本文为博主chszs的原创文bet365合作在夕阳映照下 ,未经博主允许bet365合作在夕阳映照下 得转载

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