Logging, security, transactions, caching, retries — these concerns cut across every service method in every enterprise application, and implementing them manually produces the same boilerplate in hundreds of places. Aspect-Oriented Programming removes that duplication.
This book teaches AOP on both sides of the enterprise divide. It covers AspectJ, the reference implementation whose vocabulary shaped every AOP framework after it. It covers Spring AOP, the proxy-based framework used by most Java applications. It covers PostSharp and Castle DynamicProxy on .NET, comparing compile-time, load-time, and runtime weaving. It covers pointcut expressions, advice types, proxy mechanics, weaving strategies, and the practical aspects that matter: logging, security, transactions, retry, caching, and observability.
Every chapter ships with runnable code, ordering diagrams, and the pitfalls that only surface under production load. Written for Java and .NET architects, senior developers, and framework engineers.
