If you've never listened to the History of Rome podcast you'd enjoy it a whole lot. He also makes a lot of book recommendations through the course of the podcast.
developer of AWX here. We're working on this! unvaulting is available during playbook runs but we definitely need to make it available during inventory syncs also. The features coming up in Ansible 2.4 will enable us to do this.
One of the developers of OGS here! We're pretty excited to make this happen and continue development of the site and hopefully bring Go (the game) to a larger audience.
I have a cluster that I'm looking to upgrade on AWS and was holding off for some information on upgrade procedures but I see this "Instructions coming soon" under "Known Issues and Important Steps before Upgrading".
I used this as part of an Analytics BI project years ago. The biggest problem for me was dealing with the optimistic concurrency model.
We ran into enough issues with partial writes during rollbacks due to failed transactions that we eventually had to abandon it in favor of Infobright. Having said that queries were ridiculously fast for OLAP workflows involving millions of records.