.net – Tips/recommendations for using Lucene

Not quite sure if I completely understand your code, but when it comes to geospatial search a filter approach might be more appropriate. Maybe this link can give you some ideas - http://sujitpal.blogspot.com/2008/02/spatial-search-with-lucene.html

Maybe you can use Filters for other parts of your query as well. To be honest your query looks quite complex.

--Hardy

Yes, Lucene can search from and write to an index at the same time as long as no more than 1 IndexWriter writes to it. If you want the new records visible ASAP, have the IndexWriter call the commit() function often (see IndexWriter's JavaDoc for details).

These Wiki pages might also help:

ImproveIndexingSpeed

ImproveSearchingSpeed