The article wraps up the "Design Pattern Dissection" series by showing how the 23 GoF patterns appear in JDK, Spring and MyBatis, clarifying the most confusing pattern pairs, warning against over‑design, and presenting a comprehensive map that links each pattern to the seven core design principles.
The article traces design patterns from Alexander’s 1977 architectural ideas through the GoF’s 1994 catalog, debunks myths that they’re obsolete for simple CRUD, shows their essential role in extensible frameworks and complex SaaS systems, and advises learning them by matching each pattern to the specific problem it solves while grounding them in core OOP concepts and the seven SOLID‑type design principles.
This article introduces the seminal GoF design pattern book, explaining its three main categories—creational, structural, and behavioral patterns—along with examples and links to further readings, aiming to build a comprehensive understanding of software design fundamentals.
