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getLoadBalancedConnection

Applies To

Syntax

 int getLoadBalancedConnection(
       string $connectionType = 'write|readonly'
       )

Description

The method getLoadBalancedConnection() returns the appropriate node number for the connection type, taking into account the connection type, the connection weight, whether connections are pinned and if there are any failed connection in any of the nodes.

In the following example, we have 4 nodes, 1 write and 3 readonly

Node	Type	Weight
0	write	1
1	readonly	50
2	readonly	30
3	readonly	40

If we make a call to getReadOnlyConnection('write'), the return value is always 0 (zero)
If we make a call to getReadOnlyConnection('readonly'), the return value is 1
If we disconnect node 1 or the connection fails, the return value is 3