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Multi server load balancing and failover



multi server load balancing diagram

Load balance scenario one

In this example we have an active load balancer that distributes connections evenly to a group of web servers in the back end. The Second load balancer is waiting for the event where the primary load balancer fails. If this where to occur the secondary load balancer would take state of all the connections and continue to route traffic as normal. The clients would not have even known there was a failure.

Load balance scenario two

As functioning the same as Scenario one except "Server 2" and "Server 4" have less RAM and less CPU Speed as "Server 1" and "Server 3". In this case we would instruct the load balancer to distribute less connections to Server 2 and 4 thus keeping each server at optimum load capacity.
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