Thanks. I preffer sorting. But I'm afraid that it won't be enough. How long time do you think it will take to rebuild the caches? If I use a sort on the datefield and perform a query (with that sort) will it always rebuild the whole cache or just the cache for the actual hits? / Marcus
________________________________ Från: Erik Hatcher [mailto:[EMAIL PROTECTED] Skickat: sö 2006-05-21 17:45 Till: java-user@lucene.apache.org Ämne: Re: Date first best practises On May 21, 2006, at 11:31 AM, Marcus Falck wrote: > I will use Lucene to index 200 million documents (doc size 2kb -> > 20 kb). > With the following requirements: > IndexSearcher needs to be created atleast every 5 minute. > The ranking/scoring/sorting will need to reply the hits ordered by > date desc. > > Will the sorting be good enough on a machine with 4GB of RAM? Since > the cache will be destroyed every time I open a new IndexSercher i > need to know how long it will take to rebuild it (the index is > stored on a SAN). My hunch is that sorting will be fine, but you'll want to warm up the caches before putting a new IndexSearcher into production use. Solr does this by running a configurable set of queries against an index before swapping out the old IndexSearcher with a new warmed up one. > Or do I have to change the scoring so I wont need to access the > date field? > > If i will have to change the scoring does anybody have any tips on > where to begin? Solr's FunctionQuery (isn't it time we move this to the core of Lucene?! :) might be able to help you out in this situation, but it sounds like sorting is what you want to use, not scoring tweaks. Erik --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
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