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Apache Axis2 Web Services Second Edition by Afkham Azeez, Deepal Jayasinghe

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Highly available load balancing

In order to avoid single points of failure, the worker Axis2 clusters—Group H and Group D—can be fronted by a load balancer cluster, Group LB, as shown in the following figure. One load balancer in Group LB will be the primary load balancer. The Apache Synapse load balancer can be deployed in this manner, and uses the underlying Axis2 clustering mechanism. The web service clients will talk to the endpoints in the primary load balancer and will be unaware of the backend worker node Axis2 clusters.

Highly available load balancing

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