MySQL 讀寫分離
MySQL讀寫分離又一好辦法 使用 com.mysql.jdbc.ReplicationDriver
在用過Amoeba 和 Cobar，還有dbware 等讀寫分離組件后，今天我的一個(gè)好朋友跟我講，MySQL自身的也是可以讀寫分離的，因?yàn)樗麄兲峁┝艘粋€(gè)新的驅(qū)動(dòng)，叫 com.mysql.jdbc.ReplicationDriver
說明文檔：http://dev.mysql.com/doc/refman/5.1/en/connector-j-reference-replication-connection.html
代碼例子：
| 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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