From the Meetup site:
Well look at the thriving Ruby ecosystem that has grown up around integrating with Solr. From Ruby gems that integrate with Solr like solrb and rsolr, to general search solutions like acts_as_solr and sunspot. Well also look at a complete “shrink wrapped” catalog solution for Solr using BlacklightOPAC.
Youll lean the basics of getting started with Solr, and an understanding of what Ruby solutions are available to simplifying adding great search to your site!
As usual, food and beverages will be provided.