What does the "Cache Distributed" option on the Application page in the CSA application do? When should it be used?

Document ID : KB000054158
Last Modified Date : 14/02/2018
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Description:

What does the "Cache Distributed" option on the Application page in the CA PPM System Administration (CSA) application do? When should it be used?

Solution:

When this feature is turned on, it stores the session information in the database instead of the cache for the individual application server. The "Cache Distributed" option will only show on the Application page if the Distributed option is checked.

We strongly recommend that customers use Session Affinity (or Sticky Sessions) in their load-balancer instead of the cache distributed option. Turning on the "Cache Distributed" option can cause a heavy performance hit, because every request for a server will create two hits to the database (a read and a write). This performance gets worse with larger numbers of users and when users are logged in for longer periods of time.

The Cache Distributed option should be unchecked and the customer should instead use Session Affinity or Sticky Sessions on the Load Balancer unless this option has been recommended by CA Technologies Services or Support representatives.