Hi, Solr is good at caching: even if first "cold" query takes longer time, the subsequent one is much quicker, given that it shares the fq's of the first query.
This is more like an idea question: what about the out-of-vocabulary (OOV) queries? According to my quick measurements, they take same amount of time when repeated and return nothing. Most of such queries are usually user typos, so I could imagine implementing a round-trip to the server with an auto-corrected query, if the first query returned 0 hits. This does not solve the underlining slow 0 hits query though. Would it make sense to implement an OOV cache to speed things up? Does one exist already in Lucene / Solr? -- Dmitry Kan Blog: http://dmitrykan.blogspot.com Twitter: http://twitter.com/dmitrykan
