[Mapserver-dev] Query efficiency

Steve Lime steve.lime at dnr.state.mn.us
Tue Mar 2 23:09:33 EST 2004

Hi guys: The issue of query efficiency keeps coming up these days as
queries are not simply a means to an end. SVG, image maps etc... are
going to push the current code, especially with non-shapefile
datasources. I/we need to figure out a way to cache shapes that are part
of a query result set. We could use the inline feature structures to do
this but I worry about huge result sets, and/or could consider
serializing shapes to some high performance format. There are some
interesting possibilities with the latter. Query caching could be made
very efficient (e.g. queryfile/savequery CGI options) and that format
could be useful for regular layers too, kind of like the gd2 format.  

What do folks think?


More information about the mapserver-dev mailing list