Hi, Somebody on IRC has recently asked about when to do solr index optimization. I pointed out, that deletes in the index could be a good reason to periodically optimize, here is a nice post with QPS statistics per query type (though on Elasticsearch site, it is relevant, because essentially the post is on Lucene level):
https://www.elasticsearch.org/blog/lucenes-handling-of-deleted-documents/ -- Dmitry Kan Luke Toolbox: http://github.com/DmitryKey/luke Blog: http://dmitrykan.blogspot.com Twitter: http://twitter.com/dmitrykan SemanticAnalyzer: www.semanticanalyzer.info