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Could anyone explain me if there are diff in performance between these 2 queries ?
q=field1:xxx
and
q=*:*&fq=field1:xxx
Also, it would be good if you know about documents for Solr performance turning and post them here.
Thanks,
fq utilizes filter cache which allows all the subsequent queries to be fetched from cache rather then the actual index.
Some helpful links :-
http://lucene.472066.n3.nabble.com/fq-vs-q-td495570.html
http://searchhub.org/2012/02/10/advanced-filter-caching-in-solr/
http://www.michaelhamrah.com/blog/2011/11/solr-improving-performance-and-other-considerations/