MongoDB\Driver\Server::getLatency
(mongodb >=1.0.0)
MongoDB\Driver\Server::getLatency — Returns the latency of this server in milliseconds
Descrizione
Returns the latency of this server in milliseconds. This is the client's
measured
» round trip time
of a hello command.
Elenco dei parametri
Questa funzione non contiene parametri.
Valori restituiti
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).
Errori/Eccezioni
- Throws MongoDB\Driver\Exception\InvalidArgumentException on argument parsing errors.
Log delle modifiche
| Versione | Descrizione |
|---|---|
| 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.
|
Esempi
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());
?>Il precedente esempio visualizzerà qualcosa simile a:
int(592)
Vedere anche:
- MongoDB\Driver\Server::getInfo() - Returns an array of information describing this server
- MongoDB\Driver\ServerDescription::getRoundTripTime() - Returns the server's round trip time in milliseconds
- » Server Discovery and Monitoring Specification
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