I'm a big fan of IEEE Software magazine. http://www.computer.org/portal/web/software/home http://www.computer.org/portal/web/software/home They have a lot of g

I'm a big fan of IEEE Software magazine. http://www.computer.org/portal/web/software/home http://www.computer.org/portal/web/software/home They have a lot of good authors who focus on different aspects of design and architecture. I also enjoyed Implementation Patterns by Kent Beck. It is not so much on the architecture of the system, but focuses on the implementation of classes and routines.