LoadMonitor Interface Reference

An interface for database load monitoring. More...

Inheritance diagram for LoadMonitor:

Public Member Functions
	__construct ($parent)
	Construct a new LoadMonitor with a given LoadBalancer parent. More...
	clearCaches ()
	Clear any process and persistent cache of lag times. More...
	getLagTimes ($serverIndexes, $wiki)
	Get an estimate of replication lag (in seconds) for each server. More...
	scaleLoads (&$loads, $group=false, $wiki=false)
	Perform pre-connection load ratio adjustment. More...

Detailed Description

An interface for database load monitoring.

Definition at line 29 of file LoadMonitor.php.

Constructor & Destructor Documentation

LoadMonitor::__construct

(

$parent

)

Construct a new LoadMonitor with a given LoadBalancer parent.

Parameters

LoadBalancer

$parent

Implemented in LoadMonitorNull, and LoadMonitorMySQL.

Member Function Documentation

LoadMonitor::clearCaches

(

)

Clear any process and persistent cache of lag times.

Since

1.27

Implemented in LoadMonitorMySQL, and LoadMonitorNull.

LoadMonitor::getLagTimes	(		$serverIndexes,
			$wiki
	)

Get an estimate of replication lag (in seconds) for each server.

Values may be "false" if replication is too broken to estimate

Parameters

array	$serverIndexes
string	$wiki

Returns

array Map of (server index => float|int|bool)

Implemented in LoadMonitorNull, and LoadMonitorMySQL.

LoadMonitor::scaleLoads	(	&	$loads,
			$group = false,
			$wiki = false
	)

Perform pre-connection load ratio adjustment.

Parameters

array	&$loads
string | bool	$group	The selected query group. Default: false
string | bool	$wiki	Default: false

Implemented in LoadMonitorNull, and LoadMonitorMySQL.

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The documentation for this interface was generated from the following file:

• includes/db/loadbalancer/LoadMonitor.php