Normally, the directory server that receives a request must iterate over the whole range of changelog entries and then match entries based on search criteria for inclusion in the batch. The majority of this processing also involves determining whether or not the changelog entry includes changes to a particular attribute or set of attributes. Using changelog indexing, client applications can dramatically speed up throughput when targeting the specific attributes.

You can configure attribute indexing using the index-include-attribute and index-exclude-attribute properties on the Changelog Backend. The properties can accept the specific attribute name or special LDAP values * to specify all user attributes or + to specify all operational attributes.

To determine if the directory server supports this feature, view the Root DSE for the following entry.