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https://issues.apache.org/jira/browse/SYNAPSE-773?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Chintana Wilamuna updated SYNAPSE-773:
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Attachment: weighted-roundrobin-rampup.patch
> Improving the weighted round robin algorithm to take a ramp up frequency so
> that it'll gradually increase the load once a suspended endpoint becomes
> active
> -----------------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: SYNAPSE-773
> URL: https://issues.apache.org/jira/browse/SYNAPSE-773
> Project: Synapse
> Issue Type: Improvement
> Components: Core
> Affects Versions: NIGHTLY
> Reporter: Chintana Wilamuna
> Fix For: NIGHTLY
>
> Attachments: weighted-roundrobin-rampup.patch
>
>
> Currently when WeightedRoundRobin algorithm is used to load balance, once an
> endpoint gets active again after suspension, it'll put the original weight
> back on. This results in the endpoint going down again in heavy load
> conditions. This patch tries to avoid this by defining a ramp up frequency
> for all the endpoints. So that once a suspended endpoint becomes active again
> it'll slowly increase the load to that endpoint upto the maximum weight
> defined for the given endpoint by loadbalance.weight property.
> Configuring,
> For a given load balance endpoint you have to define,
> <property name="loadbalance.weight" value="x" />
> <property name="rampup.frequency" value="y" />
> where x and y are integers. Ramp up frequency is currently calculated per
> minute. If you have a weight of 10 and a ramp up frequency 2, it'll take 5
> minutes to increase the weight of the endpoint to the maximum defined value
> of 10.
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