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The following page has been changed by HossMan: http://wiki.apache.org/solr/SolrCaching ------------------------------------------------------------------------------ You can specify a regenerator for any of the cache types here, but !SolrIndexSearcher itself specifies the regenerators that Solr uses internally. + == The Lucene FieldCache == + + Lucene has a low level "Field``Cache" which is used for sorting (and in some cases faceting). This cache is not managed by Solr it has no configuration options and cannot be autowarmed -- it is initialized the first time it is used for each Searcher. + + See below for ways you can "explicitly warm" the Field``Cache using newSearcher and firstSearcher event listeners. + = Other Cache-relevant Settings = + + == newSearcher and firstSearcher Event Listeners == + + A firstSearcher event is fired whenever a new searcher is being prepared but there is no current registered searcher to handle requests or to gain autowarming data from (ie: on Solr startup). A newSearcher event is fired whenever a new searcher is being prepared and there is a current searcher handling requests (aka registered). + + In both cases, a Solr``Event``Listener (like the Query``Sender``Listener) may be configured in the [wiki:SolrConfigXml solrconfig.xml] file -- This is particularly useful to "explicitly warm" caches up with common queries on startup, and to forcibly create the Field``Cache for common sort fields when new searchers are opened... + + {{{ + <listener event="newSearcher" class="solr.QuerySenderListener"> + <arr name="queries"> + <!-- seed common sort fields --> + <lst> <str name="q">anything</str> <str name="sort">name desc price desc populartiy desc</str> </lst> + </arr> + </listener> + <listener event="firstSearcher" class="solr.QuerySenderListener"> + <arr name="queries"> + <!-- seed common sort fields --> + <lst> <str name="q">anything</str> <str name="sort">name desc price desc populartiy desc</str> </lst> + <!-- seed common facets and filter queries --> + <lst> <str name="q">anything</str> + <str name="facet.field">category</str> + <str name="fq">inStock:true</str> + <str name="fq">price:[0 TO 100]</str> + </lst> + </arr> + </listener> + }}} == useFilterForSortedQuery ==
