Separating the database from the actual Rails app is probably the first thing everyone will do when they want to scale their app, but still, I'm unable to find a tutorial on how to do it. It will be great if you can include one in the "Articles and Tutorials" section or at least give me a link to a page that explains how to solve this problem.
PS: I'll probably use Nginx as an web server, PostgreSQL as RDBMS so it's better if the tutorial will use them.
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