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This module contains multithread-safe cache implementations.
All Caches have
getorbuild(key, builder)
delentry(key)
methods and allow configuration when instantiating the cache class.
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}|dk r)|d|� D ] \ }}| � |d�� � � dS dS dS )z' prune out entries with lowest weight. c �& � g | ]\ }}|j |f��S � )�weight)�.0r r s r �
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the weight of a value is computed as the product of
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The values with the least such weights are evicted
if the cache maxentries threshold is superceded.
For implementation flexibility more than one object
might be evicted at a time.
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AgingCachez; This cache prunes out cache entries that are too old.
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