Home | Replicators | Single replica
N-way peer to peer
Look at the configuration in Figure | -4. The cluster members are application servers that have been created as members of a cluster. Data Replication Service is used to copy session data between the clustered application servers.
The default topology for Data Replication Service in v5 is for all replicators to service all channels in the replicator domain. This means for four application servers, there will be three backups and the original. You can see how this could quickly consume a lot of memory.
To reduce the memory overhead without losing the backup, you can set the Single Replica flag to limit the replicators to one backup copy. In the event of a failover, the Session Manager will find the backup and make it available to the application server where the request lands.