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MongoDB\Driver\Monitoring\ServerHeartbeatSucceededEvent::getDurationMicrosReturns the heartbeat's duration in microseconds 説明
final public int MongoDB\Driver\Monitoring\ServerHeartbeatSucceededEvent::getDurationMicros()
The heartbeat's duration is a calculated value that includes the time to send the message and receive the reply from the server. パラメータこの関数にはパラメータはありません。 戻り値Returns the heartbeat's duration in microseconds. エラー / 例外
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