Postgres, the Best Tool You're Already Using

This talk shows some of the useful features of Postgres not many people seem to be aware of -
http://adamsanderson.github.io/railsconf_2013/

Also, take a look at the following to use these features in your Rails apps -

• https://github.com/engageis/activerecord-postgres-hstore
• https://github.com/Casecommons/pg_search
• http://reefpoints.dockyard.com/ruby/2012/09/18/rails-4-sneak-peek-postgresql-array-support.html