On Mon, Nov 07, 2011 at 10:48:19PM +0200, goran kent wrote: > Can you think of any unexpected issues which might arise from caching > top_docs() and not other elements of a search transaction?
The top_docs() method is where the search happens. The results for a given set of arguments should be deterministic for the life of a Searcher. It occurs to me now that top_docs() also takes two other params in addition to the query: sort_spec and num_wanted. Clearly, num_wanted must be part of the cache key as well. So too must the sort_spec if it is changing, which may complicate matters as SortSpec does not presently have a useful to_string() method. Marvin Humphrey
