Sun Java Communications Suite 5 Deployment Planning Guide

Resolving the Master-Slave Delay Problem

The LDAP data cache resolves the master/slave LDAP configuration problem by providing Calendar Server clients with the most recent LDAP data, even when the master directory server has not updated each slave directory server.

If the LDAP data cache is enabled, Calendar Server writes committed LDAP data to the cache database (ldapcache.db file). By default, the LDAP cache database is located in the /var/opt/SUNWics5/csdb/ldap_cache directory, but you can configure a different location if you prefer.

When a client makes a change to the LDAP data for a single user, Calendar Server writes the revised data to the LDAP cache database (as well as to the slave directory server). A subsequent client operation retrieves the LDAP data from the cache database. This data retrieval applies to the following operations for a single user:

Thus, the LDAP data cache database provides for:

Limitations to the LDAP Data Cache Solution

The LDAP data cache does not provide for: