[bnchrch]

At my old job we had a lovely django app that acted as the base for multiple e-commerce sites. It's database layer was initially MySQL but due do reliability issues, lack of robust admin tools and poor GIS support we made the move to postgres.

The switch in code was trivial as we were making full use of the Django ORM and the migration script we created was simple as they were both Relational DB's. However most of our time was spend testing and creating fail safes as changing a production DB if done wrong can have dire consequences.