• Package
• Description
• Configuration
• Examples

Click on ^Javadoc link to open Javadoc documentation.

Package

org.gridgain.grid.spi.loadbalancing.weightedrandom ^Javadoc

Available starting with GridGain

Description

GridWeightedRandomLoadBalancingSpi ^Javadoc picks a random node for job execution. Note that you can optionally assign weights to nodes, so nodes with larger weights will end up getting proportionally more jobs routed to them (see GridWeightedRandomLoadBalancingSpi ^Javadoc configuration property). By default all nodes get equal weight defined by DFLT_NODE_WEIGHT ^Javadoc (value is 10).

Configuration

The following configuration parameters can be used to configure GridWeightedRandomLoadBalancingSpi ^Javadoc

Setter Method	Description	Optional	Default
setUseWeights(boolean) Javadoc	Configuration parameter indicating whether node weights should be checked when doing random load balancing.	Yes	Default value is false which means that node weights are disregarded for load balancing logic.
setNodeWeight(int) Javadoc	Configuration parameter for weight of the node. Nodes with more processing capacity should be assigned proportionally larger weight.	Yes	Default value is DFLT_NODE_WEIGHT Javadoc and is equal for all nodes.

Examples

As any GridGain SPI, GridWeightedRandomLoadBalancingSpi ^Javadoc SPI can be configured either directly from code or from Spring configuration file. Here is an example of GridWeightedRandomLoadBalancingSpi configuration from code:

GridWeightedRandomLoadBalancingSpi = new GridWeightedRandomLoadBalancingSpi();
 
// Configure SPI to used weighted
// random load balancing.
spi.setUseWeights(true);

// Set weight for the local node.
spi.setWeight(10);

GridConfigurationAdapter cfg = new GridConfigurationAdapter();

// Override default load balancing SPI.
cfg.setLoadBalancingSpi(spi);

// Start grid.
GridFactory.start(cfg);

or from Spring configuration file

<bean id="grid.custom.cfg" class="org.gridgain.grid.GridConfigurationAdapter" singleton="true">
    ...
    <property name="loadBalancingSpi">
         <bean class="org.gridgain.grid.spi.loadbalancing.weightedrandom.GridWeightedRandomLoadBalancingSpi">
             <property name="useWeights" value="true"/>
             <property name="nodeWeight" value="10"/>
         </bean>
    </property>
    ...
</bean>

For more information about using Spring framework for configuration click here.