使用Mysql新版驱动的ReplicationDriver实现MySQL读写分离

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在用过Amoeba 和 Cobar，还有dbware 等读写分离组件后，今天我的一个好朋友跟我讲，MySQL自身的也是可以读写分离的，因为他们提供了一个新的驱动，叫 com.mysql.jdbc.ReplicationDriver

说明文档：http://dev.mysql.com/doc/refman/5.1/en/connector-j-reference-replication-connection.html

代码例子：

import java.sql.Connection;import java.sql.ResultSet;import java.util.Properties; import com.mysql.jdbc.ReplicationDriver; public class ReplicationDriverDemo {   public static void main(String[] args) throws Exception {    ReplicationDriver driver = new ReplicationDriver();     Properties props = new Properties();     // We want this for failover on the slaves    props.put("autoReconnect", "true");     // We want to load balance between the slaves    props.put("roundRobinLoadBalance", "true");     props.put("user", "foo");    props.put("password", "bar");     //    // Looks like a normal MySQL JDBC url, with a    // comma-separated list of hosts, the first    // being the 'master', the rest being any number    // of slaves that the driver will load balance against    //     Connection conn =        driver.connect("jdbc:mysql:replication://master,slave1,slave2,slave3/test",            props);     //    // Perform read/write work on the master    // by setting the read-only flag to "false"    //     conn.setReadOnly(false);    conn.setAutoCommit(false);    conn.createStatement().executeUpdate("UPDATE some_table ....");    conn.commit();     //    // Now, do a query from a slave, the driver automatically picks one    // from the list    //     conn.setReadOnly(true);     ResultSet rs =      conn.createStatement().executeQuery("SELECT a,b FROM alt_table");      .......  }}

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