Content Classification Service Integration Guide › CCS Deployment › Manage the Classification Cache › Configure the Cache Maintenance Service

Configure the Cache Maintenance Service

The Classification Cache is an LDAP directory designed for fast access times and low latency. However, if the cache grows too large, cache performance can suffer. If the cache approaches its maximum size limit, there is a risk that new document classifications cannot be stored in the cache.

The CA DLP Classification Cache Maintenance service is designed to prevent these problems. This service maintains the cache size below a configurable limit. The service checks the cache size at regular intervals and purges older cache entries if the cache size exceeds the specified limit.

Use the Services applet to verify that the CacheMaintenance service has started.

To configure the Cache Maintenance Service

1. Use an LDAP browser to browse the classification cache on the CA Directory host server.
2. Browse to the following entry:

   cn=AutoPurge,cn=Settings,cn=ClassificationCache 
   

3. This entry contains two settings that control when cache entries are purged. Under normal conditions, you do not need to modify these settings. However, if you notice that automatic purges run too often (which may affect cache performance), you can widen the gap between the HighWatermarkPercent and LowWatermarkPercent settings:

   HighWatermarkPercent

   This setting defaults to 80%. When the size of the classification cache increases to 80% of the maximum permitted size, the oldest entries are automatically purged from the cache until the cache size falls below the threshold specified by the LowWatermarkPercent setting.

   LowWatermarkPercent

   This setting defaults to 70%. Automatic cache purging stops when the size of the cache falls below 70% of the maximum permitted size.