The Guava book, and the High Performance Postges book was pretty good. Additionally, something with Packt that you have to watch out for: Some of their titles

The Guava book, and the High Performance Postges book was pretty good. Additionally, something with Packt that you have to watch out for: Some of their titles conflict with each other. I.e. Along with the High Performance Postgres book, theres another book called Managing Postgresql, its not so great ircc.