PostgreSQL is used by many large companies, you can see a list of companies and read the case studies on the PostgreSQL website at the below links :
There are different development streams , and versions of PostgreSQL, and currently dolphin integrates with the 8.4.X development stream.
We mentioned in our previous post that running dolphin with a version 9 database will result in dolphin being slower than it should be. We did not go into too much detail about why this is though.
This post will briefly cover the main reasons why using postgreSQL verison 9 makes Dolphin slower.