What is Scavenging?

Question

What is Scavenging?

Francis · Answer

What is Scavenging? In english, litteral meaning of scavenging is "to take or gather (something usable) from discarded material". In ASP.Net, Scavenging is the process of deleting items from the cache when memory is scarce. ASP.NET uses the CacheItemPriority object to determine which items to scavenge first. https://msdn.microsoft.com/en-us/library/system.web.caching.cacheitempriority.aspx Scavenging is one way to remove data from the cache. There are other ways also available like Expiration and Dependency Changes. https://msdn.microsoft.com/en-us/library/ms178597.aspx Hope this helps!

Ravi Patel · Answer

Hi, When we implement the Caching concept in the application,all the cached items will be stored in the memory.When executing the application if memory resources are low,then all the cached items stored in the memory get remove from the caching. this concept is called Scavenging

Rajesh Singh · Answer

Hi A process where items are removed from 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. When server running your ASP.NET application runs low on memory resources , items are removed from cache depending on cache item priority.cache item priority is set when you add item to cache. BY setting the cache item priority controls which items scavenging is removed first.