[jira] [Created] (ARTEMIS-2972) Client Load-Balancing strategies

["Apache Dev (Jira)" <ji...@apache.org>]

Apache Dev created ARTEMIS-2972:
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             Summary: Client Load-Balancing strategies
                 Key: ARTEMIS-2972
                 URL: https://issues.apache.org/jira/browse/ARTEMIS-2972
             Project: ActiveMQ Artemis
          Issue Type: New Feature
          Components: API
            Reporter: Apache Dev


New brokers joining a cluster could remain underutilized, unless existing clients create new connections to them.

When a new broker is started and joins the existing cluster, existing clients can be notified using {{ClusterTopologyListener}}.
Such clients can create new connections with {{ServerLocator}}, using its own load-balancing mechanism or targeting "manually" a specific broker.

{{ConnectionLoadBalancingPolicy}} can be used to choose the strategy for {{ServerLocator}} to create a new connection.
However, no informations are provided to the policy implementor about brokers to choose.

In highly dynamic scenarios (say that there are multiple clients and many brokers can go up and down), it would be necessary to keep in sync with topology updates and create new connections manually. It could be challenging to grant that one and only one connection is created to each broker.

In such a situation, clients should be made even more agnostic about clustering, and should  automatically leverage brokers joining the cluster.




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