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22 lines
948 B
Go
22 lines
948 B
Go
// Package lru provides three different LRU caches of varying sophistication.
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//
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// Cache is a simple LRU cache. It is based on the
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// LRU implementation in groupcache:
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// https://github.com/golang/groupcache/tree/master/lru
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//
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// TwoQueueCache tracks frequently used and recently used entries separately.
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// This avoids a burst of accesses from taking out frequently used entries,
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// at the cost of about 2x computational overhead and some extra bookkeeping.
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//
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// ARCCache is an adaptive replacement cache. It tracks recent evictions as
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// well as recent usage in both the frequent and recent caches. Its
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// computational overhead is comparable to TwoQueueCache, but the memory
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// overhead is linear with the size of the cache.
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//
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// ARC has been patented by IBM, so do not use it if that is problematic for
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// your program.
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//
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// All caches in this package take locks while operating, and are therefore
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// thread-safe for consumers.
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package lru
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