Using Postgres, like, for Real writting by Hsing-Hui, Ada student. Read the original post on her blog. The vast majority of Rails apps we build are hosted on Heroku, which uses PostgreSQL to store database tables. Since starting a new project by running rails new defaults to using SQLite3, the way kind of hacked around this problem was by simply using SQLite in development and testing, and postgreSQL in production, like so: (in Gemfile) group :development, :test do  gem “sqlite3″end group :production do  gem…