MySQL 读写分离实例详解

数据库  /  管理员 发布于 6年前   195

MySQL 读写分离

MySQL读写分离又一好办法 使用 com.mysql.jdbc.ReplicationDriver

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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