ESF supports caching (remembering) the results of some security requests. This can improve performance, sometimes dramatically, by eliminating some calls to the configured Security Managers.
There are two types of ESF caching. The ESF manager itself can cache results. When a request matches one in the ESF cache, the ESM Modules are not called, and the cached result is returned. ESF also has a mechanism for ESM Modules to cache information that may be expensive to retrieve. From Enterprise Developer 7.0, the MLDAP ESM Module can use this to cache the results of LDAP searches. See MLDAP ESM Module for more information.