MongoDB\Driver\Server::getLatency

(mongodb >=1.0.0)

MongoDB\Driver\Server::getLatencyReturns the latency of this server in milliseconds

说明

final public MongoDB\Driver\Server::getLatency(): ?integer

Returns the latency of this server in milliseconds. This is the client's measured » round trip time of a hello command.

参数

此函数没有参数。

返回值

Returns the latency of this server in milliseconds, or null if no latency has been measured (e.g. client is connected to a load balancer).

错误/异常

更新日志

版本 说明
PECL mongodb 1.11.0 This method will return null if no latency has been measured. In earlier versions, an integer was always returned and an unset value might be reported as -1.

示例

示例 #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());

?>

以上示例的输出类似于:

int(592)

参见

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