Agreed. And all the people who keep harping on with recommendations of existing fts engines - who about providing some benchmarks regarding real-time search spe

Agreed. And all the people who keep harping on with recommendations of existing fts engines - who about providing some benchmarks regarding real-time search speeds. Thats one area where lucene (and solr using it) comes a bit unstuck - if you have fast changing dataset, its hard to keep up with storing and indexing it and thats where the redis approach with it high speed writes wins hands-down. Of course you could use lucenes RAMDirectorys and then create code to persist them back to disk, but then you're just re-inventing the redis wheel. And from what I have read of Sphinx it likely has the same issues. Plus it seems to be aimed only at the lamp crowd - not very friendly if you are not using php+mysql already.