We've been using json in the database more and more, but because not all versions of Postgres have special support for it, we've been storing it in text fields. Postgres 9.4 and up support a jsonb type that has some really nice features. It would be really nice for us to use in Koji. Koji could actually query based on structural data in a jsonb field, and even index on it. So, here's the Poll: Question 1: What version of Postgres are you using for your Koji instance(s) Question 2: How would you be impacted if Koji required 9.4 or greater? Note that Postgres 9.4 and 9.5 are available as software collections for RHEL6 and RHEL7.