Demo to sunspot solr
bundle installrake db:migraterake sunspot:solr:startrails sOnce you have the server running to get some random articles generated go to
http://localhost:3000/articles/generate/2/ where 2 is the number of articles you want to generate
rake sunspot:solr:stoprake sunspot:solr:restartrake sunspot:reindexSunspot github
API Reference
solr doc
railscasts
For the random article generator I am using SCIgen - An Automatic CS Paper Generator