The Decorator Design Pattern allows us to attach additional responsibilities to an object at runtime while keeping the original object unchanged. In other words, the pattern promotes flexible behavior extension without subclassing.

The Proxy pattern provides a substitute for another object, controlling access and allowing additional functionality before or after requests reach the original object; useful for lazy loading, security, and resource management.Retry

The Facade Design Pattern simplifies complex systems by providing a unified interface. It hides intricate operations behind a clean layer, making code easier to use, maintain, and extend without exposing internal details.

The Composite Design Pattern allows objects to be organized in a tree hierarchy, enabling uniform treatment of individual and grouped elements.

Adapter pattern enables integration of new interfaces with existing implementations, allowing reuse of legacy code without rewriting them for newer interfaces.