Siegfried Goeschl created SOLR-4056:
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Summary: Contribution of component to gather the most frequent
user search request in real-time
Key: SOLR-4056
URL: https://issues.apache.org/jira/browse/SOLR-4056
Project: Solr
Issue Type: New Feature
Components: SearchComponents - other
Affects Versions: 3.6.1
Reporter: Siegfried Goeschl
Priority: Minor
Fix For: 3.6.2
I'm now finishing a SOLR project for one of my customers (replacing Microsoft
FAST server with SOLR) and got the permission to contribute our improvements.
The most interesting thing is a "FrequentSearchTerm" component which allows to
analyze the user-supplied search queries in real-time
* it keeps track of the last queries per core using a LIFO buffer (so we have
an upper limit of memory consumption)
* per query entry we keep track of the number of invocations, the average
number of result document and the average execution time
* we allow for custom searches across the frequent search terms using the MVEL
expression language (see http://mvel.codehaus.org)
** find all queries which did not yield any results - 'meanHits==0'
** find all "iPhone" queries - "searchTerm.contains("iphone) ||
searchTerm.contains("i-phone)''
** find all long-running "iPhone" queries - '(searchTerm.contains("iphone) ||
searchTerm.contains("i-phone)) && meanTime>50'
* GUI : we have a JSP page which allows to access the frequent search terms
* there is also an XML/CSV export we use to display the 50 most frequently
used search queries in real-time
We use this component
* to get input for QA regarding frequently used search terms
* to find strange queries, e.g. queries returning no or too many result, e.g.
caused by WordDelimeterFilter
* to keep our management happy ... :-)
Not sure if the name "Frequent Search Term Component" is perfectly suitable as
it was taken from FAST - suggestions welcome. Maybe
"FrequentSearchQueryComponent" would be more suitable?
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