Hibernate in Action
By Christian Bauer, Gavin King
I learned a ton from this book, especially about session management. A lot of things I learned went straight into FeedBurner, resulting in some major performance gains. I plan on re-reading this every couple of months or so, and it serves as my number one reference on Hibernate right now.
If you use Hibernate, get this book and read it cover to cover.
Original Entry from February 28, 2005:
Currently reading this book, which is excellent. I've used it as a reference before, but now I'm going through every page. We're using Hibernate at FeedBurner and we're continually finding new ways to optimize our usage. I'm dog-earring a lot of pages as I read through this.