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April 03, 2011

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Benjamin Manes

If I recall correctly, it also does not perform an LRU reordering of an entry if it has been reordered recently. This is a fair decision given the size of the cache as it maintains relative decency, but it is not a strict LRU. An efficient approach that avoids a background sweeper thread is lock amortization, which is used by ConcurrentLinkedHashMap to provide a non-blocking LRU data structure.

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