The Enterprise Server External Security Facility (ESF) now supports caching the results of some security queries. This can improve the performance of enterprise server instances and of the MFDS when they are configured to use external security.
To enable caching, you need to set non-zero values for the Cache limit (maximum size of the cache) and Cache TTL (Time To Live, or how long before a cached result expires) settings on the MFDS Security tab, the Default ES Security tab, or on the Security tab for an individual enterprise server. (Currently, the cache settings for Security Managers have no effect; you need to set cache parameters on one of the three Security pages mentioned earlier.)
For more information, see http://supportline.microfocus.com/examplesandutilities/doxygen/caching.html.