A few weeks ago I asked on Stack Overflow about a doubt I had concerning 
the Neo4j page cache mechanism (which sadly went unanswered here 
<http://stackoverflow.com/questions/35789192/when-is-each-implementation-of-the-page-cache-used>),
 
but today I have another question about the topic which hopefully is easier 
to answer.

The release notes for 2.2.0 (here 
<http://neo4j.com/blog/neo4j-2-2-0-scalability-performance/>) say the page 
cache mechanism was implemented based on the LRU-K algorithm, but the 
documentation itself doesn't mention said algorithm at all and from what I 
gather this implementation has some considerable distinctions from the 
original algorithm.

Considering the *MuninnPageCache* class which implements the *PageCache* 
interface on neo4j-io, is this implementation based on the Muninn Flash 
Key-Value Store (from this article here 
<http://dl.acm.org/citation.cfm?id=2611364>)? If so I don't get where LRU-K 
comes into play.

Thank you for your time.

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