Deployment considerations for clustered environments

Consider the following topics when you deploy multiple replica WebSEAL servers in a clustered environment for fault-tolerance or performance reasons:

• Consistent configuration on all WebSEAL replica servers
  To maintain a consistent user experience regardless of which WebSEAL server a client accesses, all WebSEAL replica servers must be identically configured.
• Client-to-server session affinity at the load balancer
  Whenever possible, load balancers should be configured to maintain session affinity.
• Failover to a new master
  
• Failover from one WebSEAL server to another
  When clients failover from one WebSEAL server to another, there must be some mechanism for the new WebSEAL server to identify the client.

Parent topic: Session state overview

Related concepts

• Session state concepts
• Supported session ID data types
• Information retrieved from a client request
• Validation of the client identifier for a session
• WebSEAL session cache structure
• Options for handling failover in clustered environments