Implementation Guide › Performance Tuning › Web Tier Performance › Reduce Traffic between Your Web Agents and the Policy Server › Authorization Cache

Authorization Cache

Each Web Agent uses an authorization cache to store the authorization identification of users whom the Policy Server has already authorized.

The Web Agent searches the authorization cache to determine whether a user is authorized before contacting the Policy Server for authorization. The authorization cache improves performance by reducing the number of authorization calls to the Policy Server.

The authorization for a user ends when any of the following events occur:

• The user logs out.
• The session associated with a user expires.

The authorization identification is removed from the cache and discarded.