That's exactly the approach we're taking. We're not going to spend any time prematurely worrying about various scaling things until we can forecast that it's legitimately going to be a problem.

Great to hear. :)

While we're here, here are some PG tips:

1. Make sure your PG install is fully optimized. I've seen countless postgresql.conf's at major companies with no opts what so ever. Take a look at this book: http://www.2ndquadrant.com/books/postgresql-9-0-high-perform... .

2. Make sure you're using PG 9+.

3. Use pgbouncer for connection pooling and try to write your app so you can use 'pool_mode = transaction'.

4. Please don't run PG virtualized.

We're good on all fronts except 4, and the transaction pool mode :)