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								        What is Scavenging?- A process where items are removed from the cache in order to free the memory based on their priority.
  - A property called "CacheItemPriority" is used to figure out the priority of each item inside the cache. 
  - This priority property is set when an item is added to the cache.
  - It is the process of deleting items from the cache when memory is scarce.
								          
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