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From karl wettin <>
Subject Re: a thought on cache
Date Sat, 05 Aug 2006 09:53:39 GMT
On Fri, 2006-08-04 at 11:18 -0400, Yonik Seeley wrote:
> On 8/4/06, karl wettin <> wrote:
> > When new documents are inserted (if I understand it right, Solr have
> > some kind of notification system for this) the cached queries are placed
> > on the new documents (indexed in a Memory- or InstantiatedIndex [Lucene
> > issue 550]) to see if they affect the cached results.
> It would be complicated enough for a filter cache (just the docs that
> match), but doesn't even seem possible for a query cache where
> relevancy scores could change due to changes in idf.  Perhaps doable
> if one were willing to drop all idf terms from scoring...

Ouch. Yes, this is a hard nut to crack. I'll most definitely sleep on it
for a couple of night though.

Thanks all for the input!

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