MongoDB\Driver\Server::getLatency
(mongodb >=1.0.0)
MongoDB\Driver\Server::getLatency — Returns the latency of this server
说明
final
public
MongoDB\Driver\Server::getLatency (
void ) :
string
Returns the latency of this server (i.e. the client's measured » round trip time of an ismaster command).
参数
此函数没有参数。
返回值
Returns the latency of this server.
错误／异常
- Throws MongoDB\Driver\Exception\InvalidArgumentException on argument parsing errors.
范例
Example #1 MongoDB\Driver\Server::getLatency() example
<?php
$manager = new MongoDB\Driver\Manager("mongodb://localhost:27017/");
$rp = new MongoDB\Driver\ReadPreference(MongoDB\Driver\ReadPreference::RP_PRIMARY);
$server = $manager->selectServer($rp);
var_dump($server->getLatency());
?>
以上例程的输出类似于：
int(592)
参见
- MongoDB\Driver\Server::getInfo() - Returns an array of information about this server
- » Server Discovery and Monitoring Specification
