WordCacheSize defines the maximum
allowed size of the in-memory words cache.
Word cache is used with
DBMode=multi to improve
A separate word cache of the given size is allocated for every DBAddr command,
so if indexer.conf contains three DBAddr commands with WordCacheSize
set to 10Mb, then 30Mb of RAM total will be used for
the three word caches.
The default value is 8388608 (8Mb).