Greg reviews Analyzing Computer System Performance With Perl::PDQ by Neil J. Gunther, Performance by Design: Computer Capacity Planning by Example by Daniel A. Menasci, Virgilio A.F. Almeida, and Lawrence W. Dowdy, Practical Development Environments by Matthew B. Doar, and Pro PHP Security by Chris Snyder and Michael Southwell.
The intricacies of system development require a further evolution: A visual means of planning and displaying the architecture, from basic concepts through implementation.