Integration Server 10.5 | Integration Server Administrator's Guide | Configuring a Central User Directory or LDAP | Overview of Using LDAP | About LDAP and Caching
 
About LDAP and Caching
For LDAP, after accessing user information, the Integration Server caches it to improve performance. If the information remains in the cache for one hour without being accessed, or if the cache space is needed for a more recent request, the Integration Server deletes the information from the cache.
If the server receives subsequent requests that require the information it has in cache, the Integration Server uses the cached information rather than accessing the external directory.