The following figure depicts the client/server mode. There is a tier of applications servers that host Web applications using HTTP sessions, and these sessions are replicated out as they are created and updated. There is a second tier of servers without a Web application installed, where the session manager receives updates from the replication clients.
Timing consideration: Start the backup application servers first to avoid unexpected timing windows. The clients attempt to replicate information and HTTP sessions to the backup servers as soon as they come up. As a result, HTTP sessions that are created prior to the time at which the servers come up might not replicate successfully.
Related concepts
Memory-to-memory replication
Memory-to-memory topology: Peer-to-peer function
Memory-to-memory session partitioning
Related tasks
Configuring memory-to-memory replication for the peer-to-peer mode
(default memory-to-memory replication)
Configuring memory-to-memory replication for the client/server mode