The maximum taxonomies loaded threshold property indicates the maximum number of taxonomies that can be loaded in the cache (memory) before the least recently used taxonomies are unloaded. In the properties file, this property is named: max_taxonomy_cached
Settings for this property:
Value—Specified as a positive integer.
Default—The default value is 10 taxonomies. For example, setting the value to 10 means that the number of loaded taxonomies that can remain in the cache (memory) cannot exceed 10. If 10 taxonomies are currently loaded in the cache, and a request is made to load an 11th taxonomy, the least used taxonomy is unloaded.
Disable—Setting the value to zero disables this feature.
The “least recently used taxonomy” is determined by examining the time stamp of when a taxonomy was last used or accessed. The more time that has elapsed since a taxonomy was last used, the greater the chance that it is unloaded. The most recently used taxonomies have the best chance to remain in memory.