title: Any reason not use PostgreSQL's built-in full text search on Heroku?
body: <p>I'm preparing to deploy a Rails app on Heroku that requires full text search. Up to now I've been running it on a VPS using MySQL with Sphinx.</p>
  
  <p>However, if I want to use Sphinx or Solr on Heroku, I'd need to pay for an add-on.</p>
  
  <p>I notice that PostgreSQL (the DB used on Heroku) has built-in full text search capability.</p>
  
  <p>Is there a reason I couldn't use Postgres's full-text search? Is it slower than Sphinx or is there some other major limitation?</p>