Memcached 的 LRU 实际上意味着什么？
Memcached 表示它使用 LRU 队列进行驱逐（混合了一些基于板大小的规则。）当他们说最近最少使用时，他们指的是最近最少存储还是最近最少读取？他们的文档在这里似乎含糊不清。
Memcached says it uses an LRU queue to do eviction (with a few rules based around slab sizes mixed in.) When they say least-recently-used, are they referring to least recently stored or least recently read? Their documentation seems ambiguous here.
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我在任何地方看到这个术语时，LRU 都指的是最后一次访问（读或写），而不是最后一次存储。
这篇文章证实了这一点：
它继续讨论处于“主动使用”状态的项目 - 对我来说，这强烈暗示它是访问而不是存储......你不会谈论“主动存储”的内容，除非你实际编写了一半。
Everywhere I've seen the term used, LRU has referred to the last access (read or write) rather than the last store.
This article confirms it:
It goes on to talk about items which are in "active use" - which to me strongly implies that it's access rather than storage... you wouldn't talk about something "actively being stored" unless you're halfway through actually writing it.