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From: Apache Wiki <wikidiffs@apache.org>
To: Apache Wiki <wikidiffs@apache.org>
Date: Tue, 27 Dec 2011 02:02:57 -0000
Message-ID: <20111227020257.92779.58881@eos.apache.org>
Subject: 
 =?utf-8?q?=5BSolr_Wiki=5D_Update_of_=22SolrCaching=22_by_ShawnHeisey?=
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The "SolrCaching" page has been changed by ShawnHeisey:
http://wiki.apache.org/solr/SolrCaching?action=3Ddiff&rev1=3D32&rev2=3D33

  <!> [[Solr4.0]] autowarmCount can now be specified as a percentage (ie: "=
90%") which will be evaluated relative to the number of items in the existi=
ng cache.  This can be an advantageous setting in an instance of Solr where=
 you don't expect any search traffic (ie a master), but you want some cache=
s so that if it does take on traffic it won't be too overloaded.  Once the =
traffic dies down, subsequent commits will gradually decrease the number of=
 items being warmed.
  =

  =3D=3D minSize (optional) =3D=3D
- Only applicable for `FastLRUCache` . After the cache reaches its size, th=
e cache tries to bring it down to the `minSize`. The default value is `0.9 =
* size` .
+ Only applicable for `FastLRUCache`. After the cache reaches its size, the=
 cache tries to bring it down to the `minSize`. The default value is `0.9 *=
 size` .
  =

  =3D=3D acceptableSize (optional) =3D=3D
- Only applicable for `FastLRUCache` . When the cache removes old entries ,=
 it targets to achieve the `minSize`. If not possible it at least tries to =
bring it down to `acceptableSize`.  The default value is `0.95 * size`.
+ Only applicable for `FastLRUCache`. When the cache removes old entries , =
it targets to achieve the `minSize`. If not possible it at least tries to b=
ring it down to `acceptableSize`.  The default value is `0.95 * size`.
  =

  =3D=3D cleanupThread (optional) =3D=3D
  Only applicable for `FastLRUCache`. Default is set to false. If set to tr=
ue, the cleanup will be run in a dedicated separate thread.  Consider setti=
ng this to true for very large cache sizes, as the cache cleanup (triggered=
 when the cache size reaches the upper water mark) can take some time.
+ =

+ =3D=3D timeDecay =3D=3D
+ Only applicable for `LFUCache` (3.6 and later). Default is true. When ena=
bled, each time the cache reaches full size and entries are evicted, the ol=
d entries will have their hitcount reduced so that they will eventually age=
 out of the cache.
  =

  =3D Types of Caches and Example Configuration =3D
  Below we present the cache-specific parts of the solrconfig.xml file and =
its recommended settings: