This is the maximum size of the LRU cache for URL storage. If too many elements are encountered the
least recently used (LRU) elements in the cache will be flushed from the cache.
Setting the key
Set this configuration key in the search package or data source configuration.
Use the configuration key editor to add or edit the crawler.cache.LRUCache_max_size key, and set the value. This can be set to any valid Integer value.