Load balancing
In a cluster, the nodes can often handle load balancing themselves. Busy nodes can communicate with others, and transfer work to nodes that are not so busy. A non-clustered topology of nodes that do not communicate with each other can also be load balanced, as seen in the following diagram:
Clients calling non-clustered nodes through a load balancer that directs traffic to the nodes
The nodes will then have a common gateway, or load balancer, in front of them, which routes traffic to the available nodes. The routing is usually performed according to an algorithm (such as first-available, sticky-session, or round-robin) that may or may ...
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