As web applications grow, so do the challenges. These applications need to live up to demanding performance requirements, and be reliable around the clock every day of the year. And they need to withstand frequent modifications by many different programmers. If you're building a mission-critical site, this book will help you achieve the same rigor in web applications that developers have traditionally applied to other types of software. Written by a manager at Yahoo who has substantial experience with the techniques presented in this book, Developing Large Web Applications provides you with practical steps for building sites that remain effective as they add features, functions, and users. Avoid the usual coding and maintenance headaches when small websites evolve and add pages, code, and programmers. Learn the virtues of modularity, encapsulation, abstraction, and loosely coupled components. Get comprehensive coverage of issues involving HTML, CSS, PHP, JavaScript and Ajax, and database interaction. Learn solid techniques in code management and software engineering that are often unknown or forgotten by web developers.