:term:`CACHETYPE <CACHETYPE (CCENERGY)>`
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      Selects the priority type for maintaining the automatic memory cache used by the libdpd codes. A value of ``LOW`` selects a "low priority" scheme in which the deletion of items from the cache is based on pre-programmed priorities. A value of LRU selects a "least recently used" scheme in which the oldest item in the cache will be the first one deleted.

      * **Type**: string
      * **Possible Values**: LOW, LRU
      * **Default**: LOW

