8.2. Optimized Replication Mode Usage

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Replication mode is used for state sharing across a cluster; however, if you have a replicated cache and a large number of nodes are in use then there will be many writes to the replicated cache to keep all of the nodes synchronized. The amount of work performed will depend on many factors and on the specific use case, and for this reason it is recommended to ensure that each workload is tested thoroughly to determine if replication mode will be beneficial with the number of planned nodes. For many situations replication mode is not recommended once there are ten servers; however, in some workloads, such as if load read is important, this mode may be beneficial.
Red Hat JBoss Data Grid can be configured to use UDP multicast, which improves performance to a limited degree for larger clusters.
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