by the \fBbdb\fP or \fBhdb\fP backend database instance.
The default is 1000 entries.
.TP
+.BI cachefree \ <integer>
+Specify the number of entries to free from the entry cache when the
+cache reaches the \fBcachesize\fP limit.
+The default is 1 entry.
+.TP
.BI checkpoint \ <kbyte>\ <min>
Specify the frequency for checkpointing the database transaction log.
A checkpoint operation flushes the database buffers to disk and writes