default sort in lucene.net

My index contains ~4 million recrords.

When I sort the results, the query runs much slower, which is not surprising.

My question is, is there some way to create the index so that when I make a call and don't pass a sort, it so开发者_如何学Gorts by field I most recently use?

Thanks.

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By default lucene returns the results in an order, which depends on the relevance. As far as i know, you have to use the boost, the sort function or something else if you like an other listing order. What ever you take - the results will not return faster by using an sort or boost function.