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What are Primary and Replica Load Balancers?

Each Load Balancer consists of two instances: Primary and Replica. These instances are deployed identically on different hardware clusters to ensure that they don’t share physical resources to minimize the risk of simultaneous failure.

In case the primary Load Balancer fails, the highly available IP address is automatically re-routed to the replica Load Balancer to handle the traffic.

Important: There is no stateful connection synchronization between primary and replica and all long-living sessions must be reestablished in case of a switchover.


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