由于项目需要,对mysql分布事务有一定要求.这里先简单说明必要.
假设,日常财务中,要完成一个拥护订购,必须将定单操作和财务操作封在一个事务中才能保证交易完整性.
如果定单和财务数据都分布在各自的实例中,则必须用分布事务才能满足.
废话不多，进入分布事务探索。
(本文例子来自网络，本文只注重探索）
1.在本机 localhost和另一台机器上192.168.123.xxx上支持分布事务的数据库test里建下表:
CREATE TABLE `test_transation1` (
`id` int(10) unsigned NOT NULL AUTO_INCREMENT,
`name` varchar(255) DEFAULT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=3 DEFAULT CHARSET=utf8;
2.然后每个表分别插入数据
insert into test_transation1 (name) value('jonhn2');
insert into test_transation1 (name) value('jonhn');
3.用下脚本测试
<?php
$mapfarm = new mysqli("192.168.123.xx","test","testtest","test");
$map = new mysqli("localhost","root","","test");
$age = rand(1, 255);
$grid = uniqid("");
$map->query("XA START '$grid'");
$mapfarm->query("XA START '$grid'");
$values = array(1,"");
$id = rand(1,2);
try {
$sql="UPDATE test_transation1 SET name=$age WHERE id=$id";
print $sql." 113 <br>";
$return = $map->query($sql);
if($return == false) {
throw new Exception("<a href='http://'>113更新失败!$sql </a>");
}
$sql="UPDATE test_transation1 SET name=$age WHERE id=$id";
print $sql." 116 <br>";
$return = $mapfarm->query($sql);
if($return == false) {
throw new Exception("116更新失败! ");
}
$map->query("XA END '$grid'");
$map->query("XA PREPARE '$grid'");
$mapfarm->query("XA END '$grid'");
$mapfarm->query("XA PREPARE '$grid'");
$mapfarm->query("XA COMMIT '$grid'");
$map->query("XA COMMIT '$grid'");
} catch (Exception $e) {
$mapfarm->query("XA ROLLBACK '$grid'");
$map->query("XA ROLLBACK '$grid'");
print "roll
