I forked tow (Toby White, gratitude for his great work) sunburnt repository from github because I needed range facet funcionality and the workaround (with the filter queries) wasn’t quite what I wanted.
You can checkout here: https://github.com/charlesnagy/sunburnt
Docs about it:
More about range facets see: http://wiki.apache.org/solr/SimpleFacetParameters#Facet_by_Range
Now sunburnt support range … Continue reading