我正在编写一个
PHP函数,它将大量数据存储/更新到表中,这可能会导致死锁.我试图调查如何使用Doctrine重试失败的事务,但遗憾的是无法在线查找任何信息.我最终写了下面的代码
$retry = 0;
$done = false;
while (!$done and $retry < 3) {
try {
$this->entityManager->flush();
$done = true;
} catch (\Exception $e) {
sleep(1);
$retry++;
}
}
if ($retry == 3) {
throw new Exception(
"[Exception: MysqL Deadlock] Too many people accessing the server at the same time. Try again in few minutes"
);
}
死锁返回错误1213,您应该在客户端处理该错误
请注意,死锁和锁定等待是不同的事情.陷入僵局,没有“失败”的交易：他们都有罪.无法保证哪一个将被回滚.
您必须使用回滚,您的样式代码将插入重复.例如你应该：
$retry = 0;
$done = false;
$this->entityManager->getConnection()->beginTransaction(); // suspend auto-commit
while (!$done and $retry < 3) {
try {
$this->entityManager->flush();
$this->entityManager->getConnection()->commit(); // commit if succesfull
$done = true;
} catch (\Exception $e) {
$this->entityManager->getConnection()->rollback(); // transaction marked for rollback only
$retry++;
}
}
希望这有帮助.
