Add showItems to LRUCache, display extra details about cached data for both
LRUCache and FastLRUCache
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Key: SOLR-2789
URL: https://issues.apache.org/jira/browse/SOLR-2789
Project: Solr
Issue Type: Improvement
Components: search
Affects Versions: 3.4
Reporter: Eric Pugh
Priority: Minor
I noticed that the showItems parameter for cache configuration applies to
FastLRUCache but not LRUCache. So I added it. I also noticed that the key
data about an item that is QueryResult cache hit wasn't very useful, but was
for document and filter cache, so added specific support for QueryResultKey.
This patch should probably be merged with the work in SOLR-1893, which is a
proposed refactor. I'm happy to merge these two into a single patch if someone
things that is a good idea.
The output for a queryresult cache hit now looks like:
<str name="cumulative_hitratio">0.66</str>
<long name="cumulative_inserts">43</long>
<long name="cumulative_evictions">0</long>
<str name="item_QueryResultKey:-1058088364(query=text:efficient,
filters=[manu:"apple computer inc"],
sort=null)">org.apache.solr.search.DocSlice@1e66a917</str>
<str name="item_QueryResultKey:-425423228(query=text:based,
filters=[inStock:T], sort=null)">org.apache.solr.search.DocSlice@7bfcb845</str>
I've also updated the example solrconfig.xml in order to better show off the
showItems parameter.
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