The first is that the Cache implements a least-recently-used algorithm, allowing ASP.NET to force a Cache purge—automatically removing unused items from the Cache—if memory is running low.
首先，缓存会实现最近最少使用的算法，使得 ASP.NET 能够在内存运行效率较低的情况下强制缓存清除——从缓存自动删除未使用过的项目。
The process by which a page is selected to swap to storage is called a page-replacement algorithm and can be implemented using a number of algorithms (such as least recently used).
选择一个页面来交换存储的过程被称为一个页面置换算法，可以通过使用许多算法(至少是最近使用的)来实现。
Entries for the dentry cache are allocated from the dentry_cache slab allocator and use a least-recently-used (LRU) algorithm to prune entries when memory pressure exists.
dentry缓存的条目从dentry_cache slab分配器分配，并且在缓存存在压力时使用最近不使用(least - recently - used, LRU)算法删除条目。
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