Peter: You may want to take a look at Solr 3.4 with RankingAlgorithm 1.3. It has NRT support that allows you to search in real time with updates. The performance is about 10000 docs / sec with the MBArtists index (approx 43 fields ). MBArtists index is the index of artists from musicbrainz.org in the Solr 1.4 Enterprise Server book.
Regards data visibility, you can configure this as a parameter in solrconfig.xml as below: <realtime visible="200" facet="false">true</realtime> The visible attribute, 200 is in ms and controls the max duration updated docs may not be visible in a search. The facet attribute, can be true or false depending on if you need real time faceting. Real time faceting, depending on update load (for high updates), can see performance problems as field cache is invalidated. So turn it on as needed. You can get more information about the NRT with Solr 3.x and RankingAlgorithm 1.3 from here: http://solr-ra.tgels.com/wiki/en/Near_Real_Time_Search_ver_3.x You can download Solr 3.4 with RankingAlgorithm 1.3 from here: http://solr-ra.tgels.org (there is an early access Solr 3.5 with RankingAlgorithm 1.3 release available for download also) Regards, - Nagendra Nagarajayya http://solr-ra.tgels.org http://rankingalgorithm.tgels.org -- View this message in context: http://lucene.472066.n3.nabble.com/Looking-for-a-good-commit-merge-strategy-tp3582294p3582380.html Sent from the Solr - User mailing list archive at Nabble.com.